Fix Windows Activation Error 0x80070005

If you encounter a Blue Screen error that points out to the CMUDA.sys, read on as this post will guide you in fixing it. The CMUDA.sys file is a Windows operating system driver file that is related to the USB Device Audio capabilities of a computer. There are times when this file causes Blue Screen error due to some conflicts in RAM or some incompatible firmware or hard disk issues, corrupted drivers or malware infection, and so on. There are various Blue Screen errors that are related to the CMUDA.sys file such as:

• KMODE EXCEPTION NOT HANDLED
• PAGE FAULT IN A NONPAGED AREA
• IRQL NOT LESS OR EQUAL
• SYSTEM THREAD EXCEPTION NOT HANDLED (CMUSBDAC.sys)

In most cases, the CMUDA.sys file usually triggers the SYSTEM_THREAD_EXCEPTION_NOT_HANDLED Blue Screen error. Although this Blue Screen error may seem complicated, its workarounds are straightforward so you won’t have any problems in following them.

Option 1 – Try to update or rollback your device drivers

If the first option didn’t work for you, then it’s time to either update or roll back the device drivers. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• After opening the Device Manager, locate the device drivers that are marked with a small yellow exclamation mark icon and right-click on each one to open their Properties. On the other hand, you can also look for sub-entries under Sound, video, and game controllers like the C-Media USB Audio Class
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer. You can download the as C-Media USB Audio Class driver from the cmedia.com website.

Option 2 – Try to recreate the CMUDA.sys file

The first thing you can try is to recreate the CMUDA.sys file. Every time your Windows 10 PC boots up, it looks for all the system drivers in place and if it is unable to find them, it tries to create them. Which is why if you remove your corrupt driver file, chances are, you might get a fixed file recreated just for you. How? Refer to the steps below.

• Boot your Windows 10 PC in Safe Mode.
• Then open File Explorer and navigate to this location: C:/Windows/System32/drivers
• From there, look for the file named sys and rename it to CMUDA.old.

Note: As you can see, the file’s extension has changed from .sys to .old.

• Now restart your computer and check if the CMUDA.sys Blue Screen error is now fixed.

Option 3 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• After that, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

On the other hand, you can also try running the online Windows 10 Blue Screen troubleshooter from Microsoft. It is a wizard that could help you fix any Stop errors related to the CMUDA.sys file and will offer you helpful links as you use it.

Option 4 – Try running the DISM tool

You can try running the Deployment Imaging and Servicing Management or DISM tool to fix the Wdf01000.sys Blue Screen error. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 5 – Run System Restore

Running System Restore might also help in fixing Blue Screen errors related to the CMUDA.sys file.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

ListenToTheRadioNow is a Browser Extension that allegedly lets you listen to radio from your browser. However, all this extension does is add links to the popular radio stations on your home page. This extension hijacks your home page and changes your default search provides to MyWay. While running it monitors browsing data from your browser, mining information such as website visits, clicked links, and sometimes even personal information. This information is later used to display targeted ads through your browser. Several anti-virus scanners have marked this extension as a possible Browser Hijackers, and due to its data mining nature, it is not recommended to keep it on your computer.

About Browser Hijackers

Browser hijacking is a type of unwanted software, commonly a browser add-on or extension, which then causes modifications in the web browser’s settings. Browser hijackers could do more than just modifying homepages. In most cases, browser hijacking is used for earning ad revenue that comes from forced advert clicks and website visits. Even though it may seem naive, all browser hijackers are dangerous and therefore always regarded as security threats. They don’t just ruin your internet browsers, but browser hijackers could also modify the system registry to make your PC susceptible to other malicious programs.

How you can know whether the browser is hijacked?

There are several symptoms of browser hijacking: 1. home-page is changed 2. new bookmarks pointing to porn websites have been added to your bookmarks 3. the default internet search engine and/or the default web browser settings are altered 4. find new toolbars that you did not add 5. unstoppable flurries of popup ads show up on your PC screen 6. webpages load very slowly and often incomplete 7. you have prohibited entry to certain web pages, for example, the site of an anti-malware software firm like SafeBytes.

So how does a browser hijacker infect a PC

A browser hijacker could be installed on your computer or laptop if you visit an infected website, click on an e-mail attachment, or download something from a file-sharing website. They also come from add-on programs, also referred to as browser helper objects (BHO), browser plug-ins or toolbars. Also, some shareware and freeware can put the hijacker inside your computer through “bundling”. A good example of some popular browser hijackers includes Babylon, Anyprotect, Conduit, SweetPage, DefaultTab, Delta Search, and RocketTab, but the names are regularly changing.

Tips on how to get rid of a browser hijacker

Some hijackers can be removed by uninstalling the freeware they were included with or by eliminating any extension you’ve recently added to your computer. However, most hijacking codes are not very easy to eliminate manually, since they go deeper into your operating system. Furthermore, manual removal expects you to perform several time-consuming and tricky actions that are hard to do for new computer users. Professionals always recommend users to get rid of any malicious software including browser hijacker with an automatic malware removal tool, which is simpler, safer, and faster than the manual removal technique. One of the top tools for correcting browser hijacker malware is SafeBytes Anti-Malware. It can help you eliminate any pre-existing malicious software in your computer and provides you real-time monitoring and protection from the latest internet threats. Employ a PC optimizer along with your anti-malware software to correct various registry problems, remove computer vulnerabilities, and improve your computer overall performance.

Help! Malware Preventing Antivirus Installation And Access To The Internet

All malware is bad, but certain kinds of malware do a lot more damage to your computer than others. Some malware sits in between the computer and the net connection and blocks some or all internet sites that you want to check out. It will also prevent you from installing anything on your system, especially anti-virus applications. If you’re reading this, chances are you’re stuck with a malware infection that is preventing you to download and install the Safebytes Anti-Malware program on your computer. Do as instructed below to get rid of the malware by alternate methods.

Install the anti-malware in Safe Mode

Safe Mode is actually a special, basic version of Windows in which just minimal services are loaded to counteract viruses and other troublesome programs from loading. In the event, the malicious software is set to load automatically when the computer boots, switching to this mode may well prevent it from doing so. To start the computer into Safe Mode, hit the “F8” key on your keyboard just before the Windows logo screen comes up; Or right after normal Windows boot up, run MSConfig, check Safe Boot under Boot tab, and click Apply. Once you’re in Safe Mode, you can attempt to download and install your antivirus software application without the hindrance of the virus. After installation, run the malware scanner to get rid of most standard infections.

Download the security program using an alternate web browser

Some malware mainly targets particular browsers. If this sounds like your case, use another web browser as it could circumvent the virus. If you appear to have a virus attached to Internet Explorer, then switch over to an alternate browser with built-in security features, such as Firefox or Chrome, to download your preferred anti-malware program – Safebytes.

Install and run anti-virus from the Thumb drive

Another solution is to store and operate an anti-malware program entirely from a Pen drive. Do these simple steps to clear up your affected PC using a portable antivirus. 1) Download the anti-malware on a virus-free PC. 2) Insert the USB drive onto the same system. 3) Run the setup program by double-clicking the executable file of the downloaded software, with a .exe file format. 4) Choose the drive letter of the pen drive as the place when the wizard asks you where you would like to install the antivirus. Follow the instructions on the computer screen to complete the installation process. 5) Unplug the pen drive. You may now utilize this portable anti-virus on the affected computer. 6) Double-click the EXE file to open the Safebytes software right from the pen drive. 7) Click the “Scan” button to run a full system scan and remove viruses automatically.

Protect Your PC and Privacy With SafeBytes Anti-Malware

To help protect your laptop or computer from many different internet-based threats, it’s important to install an anti-malware program on your laptop. However, with so many antimalware companies in the marketplace, nowadays it is hard to decide which one you should buy for your laptop. Some of them are great and some are scamware applications that pretend as genuine anti-malware software waiting to wreak havoc on your computer. While looking for an anti-malware tool, choose one that offers dependable, efficient, and complete protection against all known computer viruses and malware. On the list of recommended software by industry analysts is SafeBytes Anti-Malware, a popular security application for Windows computers. SafeBytes anti-malware is really a powerful, highly effective protection software made to assist users of all levels of computer literacy in finding and removing harmful threats from their computer. Through its cutting-edge technology, this software protects your computer against infections caused by different kinds of malware and similar threats, including spyware, adware, viruses, worms, trojans, keyloggers, ransomware, and potentially unwanted program (PUPs). SafeBytes anti-malware provides a myriad of advanced features that sets it apart from all others. Below are some of the great features included in the tool. Robust Anti-malware Protection: Built on a highly acclaimed anti-virus engine, this malware removal application can find and get rid of many obstinate malware threats like browser hijackers, PUPs, and ransomware that other common antivirus applications will miss. Live Protection: SafeBytes provides complete and real-time security for your computer. This software will continuously keep track of your computer for suspicious activity and updates itself continuously to keep current with the latest threats. Web Filtering: Through its unique safety rating, SafeBytes informs you whether a site is safe or not to visit it. This will make sure that you’re always certain of your safety when browsing the web. Faster Scanning: SafeBytes Anti-Malware possesses a multi-thread scan algorithm that works up to five times faster than any other antivirus software. Lightweight Application: SafeBytes gives you complete protection from online threats at a fraction of the CPU load due to its enhanced detection engine and algorithms. 24/7 Live Expert Support: You will get 24/7 technical support to promptly resolve any issue with your security application. SafeBytes can keep your PC safe from most advanced malware threats automatically, thus keeping your online experience secure and safe. Malware issues can become a thing of the past when you put this application to use. If you want sophisticated forms of protection features & threat detections, buying SafeBytes Anti-Malware will be worth the dollars!

Technical Details and Manual Removal (Advanced Users)

If you do not wish to use malware removal software and like to get rid of ListenToTheRadioNow manually, you might accomplish this by going to the Windows Add/Remove Programs menu in the control panel and deleting the offending software; in cases of web browser plug-ins, you could remove it by visiting the browser’s Add-on/Extension manager. You will likely also want to reset your web browser. Finally, check your hard drive for all of the following and clean your Windows registry manually to get rid of leftover application entries after uninstalls. Please keep in mind that only experienced users should attempt to manually edit the system files because removing any single critical registry entry results in a serious problem or even a system crash. In addition, certain malware is capable of replicating or preventing removal. It is highly recommended that you carry out the removal process in Safe Mode.

Thorconnwndclass error is an Outlook error that has recently reared its head. Known to create several problems in the proper functioning of the Outlook application, this error is essentially a constituent of the Norton Antivirus Crash Guard Symantec component. That’s why those using the Norton Antivirus program are most likely to encounter this error.

Solution

Error Causes

When the Thorconnwndclass error occurs, the Outlook closes unexpectedly, users encounter problems while sending or receiving emails and, performance of Outlook is degraded and this happens because issues arise while accessing the PST file. Because of this damaged PST file, stored data is unavailable for access. Other factors that trigger the Thorconnwndclass error are listed below.

• Corrupt or damaged Outlook Add-ins
• Corrupt or damaged Outlook bar
• Unfinished Outlook installation
• Faulty settings
• Thorconnwndclass Norton is being used with Outlook

Regardless of the underlying factors that lead up to the occurrence of this error, it's of paramount importance that workarounds are implemented to ensure desired performance of Outlook in the long run.

Further Information and Manual Repair

While there are several ways to rectify this error, some of the most common ones are listed below as follows.

• The most effective solution is the PST file repair tools available online. These tools use a complex algorithm and thoroughly scan the PST file and repair it as needed. This resolves the Thorconnwndclass error that one encounters in Outlook. Usually such software have an easy to use interface and can easily be used, without the need for the user to have a strong technical background. Another advantage of using these software available online is that they not only repair the file, but they often play a pivotal role in retrieving inaccessible or lost data.

Some other tips for manually resolving this problem are listed below as follows.

• First and foremost, disable your Norton Antivirus program if it’s installed on your system. Now, open the Outlook application in Safe Mode. Since this problem may also be triggered by damaged or corrupt Outlook add-ins, it is strongly advised that you disable or uninstall them. Now, you will come across some .dat files. Rename them by changing the existing .dat files to new .dat.
• Another useful approach is to employ the Inbox Repair tool offered by Outlook.
• Finally, one can also use the scanpst.exe file to fix any problem or error that resides within the  Outlook application.

DLL files have certain functions that help the programs in the computer run properly. One of these DLL files is the Msvcr120.dll_clr0400.dll. This particular DLL file is responsible for the extraction of the required resources during the installation of a program and is used when the program is launched or when games are launched in the C++ language. However, a number of users recently reported that they’ve encountered an error that says, “Msvcr120.dll_clr0400.dll is missing” when they tried to install an application or when they tried opening an application. This kind of error could be due to several factors. It is possible that the DLL file is corrupted or there are some programs that interfere with the DLL file. On the other hand, it is also possible that it has been infected by a virus. To resolve this error, here are some potential fixes you need to check out:

Option 1 – Run System File Checker scan

The first thing you can do to fix the error is to try running the System File Checker or SFC scan. System File Checker is a command utility built into your computer that helps restore corrupted files and missing files. Refer to the following steps to run it:

• Hit the Win + R keys to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Reboot your computer.

Option 2 – Troubleshoot the missing Msvcr120.dll_clr0400.dll error in a Clean Boot State

You can also troubleshoot the isDone.dll error in a Clean Boot state. It could be that there are some third-party applications in your computer that are preventing the application from getting installed and to isolate this possibility, you need to boot your computer in a Clean Boot State and then try installing the program again. Putting your computer in this state can help you identify which program is the culprit and thus isolates the problem. In a Clean Boot state, your computer will start using only the pre-selected minimal set of drivers and startup programs. Note that you have to disable and enable one process at a time.

• Log onto your PC as an administrator.
• Type in MSConfig in the Start Search to open the System Configuration utility.
• From there, go to the General tab and click “Selective startup”.
• Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
• Next, click the Services tab and select the “Hide All Microsoft Services” check box.
• Click Disable all.
• Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
• After you’ve set your computer into a Clean Boot State, make sure that you’re signed in as administrator and then try to install the application again.

Option 3 – Try to re-register the problematic DLL file

You can also try to re-register the DLL to resolve the problem. The Regsvr32 tool is a command-line utility that can be used to register and unregister OLE controls like DLL and ActiveX (OCX) controls in the Windows operating system. Follow the steps below to use it.

• Open Command Prompt as admin from the WinX menu.
• Next, type the following commands in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
  • exe /[DLL file]
  • exe [DLL file]

Note: Replace “[DLL file]” with the name of the DLL file that was pointed out in the error.

• After you execute the given commands, you should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.

Option 4 – Try to replace the DLL file with a trusted source

• First, you need to get the new DLL file from another computer with preferably the same file version number.
• After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
  • x86: This PC > C:WindowsSystem32
  • x64: This PC > C:WindowsSysWOW64
• Next, type “cmd” in the Cortana search box and right-click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
• Now type the “regsvr32 ntdll.dll” command and hit Enter.
• Restart your PC and check if the error is now fixed.

Option 5 – Scan your computer using Windows Defender

The DLL file might also be infected with malware or virus and to eliminate it which could explain why you’re getting the “Msvcr120.dll_clr0400.dll is missing” error. Thus, you have to scan your computer using security programs like Windows Defender.

• Tap the Win + I keys to open Update & Security.
• Then click on the Windows Security option and open Windows Defender Security Center.
• Next, click on Virus & threat protection > Run a new advanced scan.
• Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.

As you know, NVIDIA is one of the topmost graphics cards used and it has been that way for several years already. And in those years, the company has managed to release the best cards on the market. However, there are still times when some things fail and don’t work as expected due to some NVIDIA driver issues. As of late, one of the issues users reported about NVIDIA drivers is that it keeps on crashing on a daily basis. It gets to the point where they aren’t able to play games anymore while some users experience lag and rendering issues. In addition, some users also reported that their computer display tends to freeze sometimes, and then things would seem to go back to normal but only for a short span of time as the crash seems to happen every 10 minutes. This can be extremely annoying as you won’t be able to use your computer properly. If you are one of these users, worry not for there are several ways you can try to resolve the problem in your Windows 10 computer. Make sure to carefully follow the options given below.

Option 1 – Try checking if the NVIDIA graphics card is enabled

Although the problem is quite massive, the fix could be as simple as enabling the NVIDIA graphics card if it turns out to be disabled. There might be some strange reason why your graphics card disables itself. Thus, the best and first option you can try is to check if the NVIDIA graphics card is enabled or not. To do so, follow these steps:

• Tap the Win + R keys to open the Run dialog box.
• Then type “devmgmt.msc” in the field and hit Enter to open the Device Manager.
• After opening the Device Manager, look for the Nvidia graphics card option among the list of device drivers. Once you found it, check if it is enabled or not. If it’s not enabled, you should see a gray arrow pointing downwards. Right-click on the card and select Enabled.
• Next, right-click on the graphics card once more and click on the Update Driver Software option and then click on the “Search automatically for updated driver software” option.

Option 2 – Try to choose Maximum Performance and disable Vsync

If the first option didn’t work out for you, then you might want to try turning off Vsync and adjust the performance to the maximum. Refer to these steps to disable Vsync and adjust performance to the maximum.

• The first thing you have to do is right-click on your desktop and select the NVIDIA Control Panel among the options.
• After opening the NVIDIA Control Panel, select Manage 3D Settings.
• After that, set Vsync to off, and then in the Power Management Mode, set it to Maximum Performance. That should fix the problem.

Option 3 – Try updating the drivers from the official site of NVIDIA

If both the first and second given options didn’t work, you can also try updating the drivers from the official NVIDIA website. And in case you don’t know the type of Nvidia graphics card that your computer is on, follow the steps below:

• Tap the Win + R keys to open the Run dialog box.
• Next type in “dxdiag” in the field and click OK or hit Enter to open the DirectX Diagnostic Tool.
• From there, you can see what type of Nvidia graphics card that your system is on.
• Take note of your graphics card information and then look for the best drivers for your operating system. Once you’ve downloaded and installed the file, restart your PC.

Screen flickering in Windows 10 - What Is It?

Screen flickering when you’re using Windows 10 is quite a common problem. It is often caused by apps that are not compatible with the operating system, or faulty display drivers.

There are a lot of possibilities for why this issue occurs. If you are one of the many users that encounter this kind of problem, you might want to check on your task manager to see if everything is working fine. One common sign that something wrong has happened is if the task manager flickers, as well. To fix this, you will need to update an app, uninstall an app, or update your display driver.

Solution

Error Causes

Common causes of the screen flickering when running on Windows 10 are software issues. This is most likely caused by the following:

• Faulty display driver
• You have an application installed that is not compatible with your operating system

Further Information and Manual Repair

In order to fix the issue of your screen flickering when you have Windows 10 as your operating system, follow these simple steps.

Note: It is very important to consult with an authorized computer technician if you are not highly confident in solving this issue by yourself. Furthermore, you can also use software to fix this problem.

• The first method is by checking if your task manager is flickering. To open the task manager, all you have to do is right-click or press and hold the start button, then select task manager.

If you have confirmed that the task manager is the one causing the screen flickers, the display driver can possibly be your problem. To fix it, all you have to do is update your display driver.

How to update the display driver

1. You have to reset your computer and boot it on Safe Mode.

      -In order to do this, you have to hold the Shift key while selecting Power>Restart. When your computer boots up, you will be greeted by a Choose an option screen. From there, you have to select Troubleshoot, then Advanced Options, then Startup Settings, and then Restart. When your computer restarts, select 4 or hit the F4 key to enter into Safe Mode.

2. When your computer finally boots up in Safe Mode, right-click or press and hold the Start button. From there, click Device Manager.

3. From the Device Manager screen, you have to expand the Display Drivers section, right-click on the driver that might be causing the problem then select Uninstall. Don’t forget to tick the Delete the driver software for this device box, press the OK button, and then restart your computer.

            - When you have two, or more, drivers installed on your computer, all you have to do is disable the other drivers. You can do this by right-clicking on the driver in the Device Manager and click the Yes box next to disable. Shut down your PC after this, disconnect the installation, and boot your computer back on.

4. When your PC boots up after the restart, click on the Start button then click on Settings.

5. You need to go to Update & Security, then Windows Update, and then check for updates.

            - If you are using multiple drivers and this technique doesn’t work, repeat the process in Step 3 and try to disable a different driver.

Remove an incompatible app

There are two ways to remove an incompatible app to fix the issue of a screen flicker on Windows 10. Apps like Norton AV, iCloud, and IDT Audio are usually the ones causing the problem. Uninstalling these apps could solve the problem. Uninstall the apps by using the methods below:

First Solution: Uninstall an app in Settings

1. Click Start, and then click Settings.
2. Click on System, and then click on Apps & Features.
3. A window will pop up and from there you will need to select the application you wish to uninstall. Click the app, and then click uninstall. Follow the screen prompt to fully uninstall the program.

Second Solution: Uninstall an app in the Start Menu

1. Click Start, and then click All Apps.
2. Look for the application you will need to uninstall, right-click the said app, and then click Uninstall. Follow the screen prompt to fully uninstall the program.

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If you encounter an error saying, “error accessing the registry” when you try to merge a registry key on your Windows 10 computer, you’re not alone as some users also experienced the same problem. According to these users, they encounter the error after they’ve re-installed their Windows version and tried to open a .reg file. Based on the reports, this error could occur if the registry file does not have administrative privileges. Meaning to say, the program does not have the necessary permission to merge the .reg file. This is common with fresh installs as well as reinstalls. Moreover, this kind of issue could also occur due to system file corruption. Whichever the case may be, here are some troubleshooting tips you can check out to resolve the error.

Option 1 – Try to import the .reg file with admin privileges

As pointed out, the error may be due to a lack of admin privileges. It could be that the Registry Editor does not have admin privileges to merge the registry file. This is common with new Windows installations especially since the Registry Editor hasn’t been opened before. So you need to import the .reg file again and this time, with admin privileges.

• Tap the Win + R keys to open the Run dialog box.
• Then type “Regedit” in the field and tap the Ctrl + Shift + Enter keys to open the Registry Editor with admin privileges.
• A User Account Control or UAC prompt will appear where you have to click Yes to proceed.
• After opening the Registry Editor, go to File > Import using the ribbon bar at the top.
• Next, use the import menu to go to the location of the file you were trying to merge. Once you’ve found it, click Open to merge it with your current registry. This should fix the problem. If not, refer to the next options below.

Option 2 – Try performing a System Restore

Running System Restore can also help you fix the error when accessing the Registry. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.
• Once the next startup is complete, you have to merge or import the file again and see if the error is now fixed or not.

Option 3 – Try to perform repair install by creating a Windows 10 installation media

• Click this link and then click the Download Tool Now button.
• Next, click the “Use the tool to create installation media (USB flash drive, DVD, or ISO file)…” option and follow the next given instructions on the screen.
• Now select the ISO file option in step 5.
• After that, you should now have an ISO file.
• Next, go to the location where you’ve downloaded the ISO file.
• Then right-click on the Windows 10 ISO file and select the Open with option and then select File Explorer.
• Now click on “setup.exe” and follow the next instructions that appear on the screen. When asked, you have to select either Nothing (clean install) or Keep personal files only option. Take note that you must not select the “Keep personal files, apps, and Windows settings since it doesn’t really work.

Option 4 – Try running the System File Checker Scan

As mentioned, the error when accessing the Registry might be caused by file corruption. And that’s where the SFC scan comes in. The SFC or System File Checker scan could detect and automatically repair damaged system files. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Now restart your computer.

The ntkrnlmp.exe file is a file associated with the Windows operating system’s NT Kernel and other system processes. It is also related to the “CRITICAL PROCESS DIED” error. So if you encounter a Blue Screen of Death error that’s related to this file, then you’ve come to the right place as this post will guide you in fixing the ntkrnlmp.exe Blue Screen error. This kind of Blue Screen error might be caused by the file getting corrupted or infected with some malware. Aside from these causes, the error might also be due to the corruption and malfunction of the graphics card drivers. Before you troubleshoot the problem, you might want to try performing System Restore especially if you tend to create a System Restore point every now and then. Performing System Restore could help you resolve the ntkrnlmp.exe Stop error. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

If System Restore didn’t help, then proceed to the given options below.

Option 1 – Disable the C-states and EIST in the BIOS

The first thing you can do is try to disable the C-states and EIST in the BIOS. To do that, refer to the steps given below.

• Go to the BIOS and from there look for an option named CPU Configuration which can usually be found under the Advanced menu.
• Next, look for CPU Power Management and under that section, disable both the “Intel EIST” and “Intel C-state” options.
• After you disable them, save the changes you’ve made and exit the BIOS.
• Now restart your computer and check if the ntkrnlmp.exe BSOD error is now fixed.

Option 2 – Try to update, rollback or disable drivers

If the first option didn’t help in fixing the ntkrnlmp.exe Blue Screen error the next thing you can do is to roll back, or update, or disable device drivers in your computer. It is most likely that after you updated your Windows computer that your driver also needs a refresh. On the other hand, if you have just updated your device drivers then you need to roll back the drivers to their previous versions. Whichever applies to you, refer to the steps below.

• Open the Devices Manager from the Win X Menu.
• Then locate the device drivers and right-click on them to open the Properties.
• After that, switch to the Driver tab and click on the Uninstall Device button.
• Follow the screen option to completely uninstall it.
• Finally, restart your computer. It will just reinstall the device drivers automatically.

Note: You can install a dedicated driver on your computer in case you have it or you could also look for it directly from the website of the manufacturer.

Option 3 – Configure the Driver Verifier Manager

The Driver Verifier Manager is another tool in Windows that could help you fix driver-related issues. And so if you want to fix the ntkrnlmp.exe Blue Screen error you need to use the Driver Verifier Manager:

• Type in the keyword “Verifier” in the Cortana search box to search for Verifier in Windows 10.
• After that, select the option “Create custom settings”.
• Make sure that you have checked everything except the options “DDI compliance checking” and “Randomized low resources simulation”.
• Next, select the option “Select driver names from a list” option.
• Afterward, you have to select all the drivers from any unofficial or third-party provider. To simply put it, you have to select all the drivers that are not supplied by Microsoft.
• Then click on the Finish button.
• Open Command Prompt as administrator and execute this command – verifier /querysettings
• The command you just executed will display the Driver Verifier settings so if you see any of the flags enabled boot your Windows 10 PC into Safe Mode.
• Open the Command Prompt as admin again and run this command – verifier /reset
• The command will reset the Driver Verifier. Once the process is done, restart your PC and check.

Option 4 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like ntkrnlmp.exe. It can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

When trying to run Computer Management, or when running mmc.exe or compmgmt.msc from a command prompt you get the error that the application has been blocked for your protection then keep reading in order to solve the issue. This is a permission issue where if a regular user tries to run such system tools will result in saying that it has been blocked. Along with this, you may have a Group Policy issue. This can be fixed, but you will need admin permission to achieve it. It’s because when they are run from the command prompt with elevated privileges, it works.

1. Change Group Policy Settings

   If your account is an admin account, and you are still facing the issue, then change the group policy settings: Open Group Policy Settings by typing gpedit.msc in the run prompt followed by pressing ENTER Navigate to User Configuration > Administrative Templates > Windows Components > Microsoft Management Console > Restricted/Permitted snap-ins Locate Computer Management policy, and double click to open it Enable it, exit Group Policy. When Enabled: The snap-in is permitted and can be added into the Microsoft Management Console or run from the command line as a standalone console. When Disabled: The snap-in is prohibited and cannot be added into the Microsoft Management Console or run from the command line as a standalone console. An error message is displayed stating that the policy is prohibiting the use of this snap-in.

2. Temporarily disable UAC

   UAC is the user access control panel, and if you need to run the command right away, you can choose to disable it for some time. Click on the Start button, and then type UAC to find the User Account Control Settings. Click to open, and then slide down the notification setting at the bottom. It will temporarily allow launching the application as there is no check. However, make sure to switch to default once you are done.

As you know, one of the basic apps in the Windows 10 operating system is the calculator and it can even be extended to a scientific calculator which makes it really useful for users. However, there are instances when you might encounter some issues while using this app. One of the issues about the Calculator app that’s been reported recently is that the Calculator app is not working. If you encounter the same problem, then you’ve come to the right place as this post will guide you on what you can do to fix the problem. Based on the reports, users claimed that the issue with the Calculator app occurred right after they’ve installed a feature update, while other users claimed that the Calculator app never really worked on their computers and there are also cases where the app opens but it either freezes or crashes. According to researchers, the main causes of the problem include a feature update that could’ve altered the settings. It could also be due to problems with the login account or corrupted and missing files, or the problem could also with the calculate app itself. To resolve this problem, here are some suggestions you can follow.

Option 1 – Run the System File Checker Scan

System File Checker or SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be the reason why the calculator app is not working properly. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Reboot your computer.

Option 2 – Run the DISM tool

You can also run the DISM Tool as it helps in repairing the Windows System Image as well as the Windows Component Store in Windows 10. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth” that could help in fixing the Calculator app.

• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism (.)exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.

Option 3 – Try logging into your computer using a different User Account

You might want to try logging into a different User Account since it is possible that the issue could have something to do with your log-in account. Thus, you can isolate this possibility by logging into a different user account. If you don’t have any other user account, simply create a new one by clicking on the Start icon and then go to Settings > Account > Family & other users. From there, go to the Other user's section and click on the Add someone else to this PC option, and then inputs all the needed information and restarts your computer. Once your computer has restarted, log into your computer using the newly created user account.

Option 4 – Try to reset or reinstall the Calculator app

If the first three given options didn’t work, you might want to reset or reinstall the Calculator app. To do that, follow these steps:

• Click on the Start button and go to Settings > Apps > Apps and features.
• Next, look for the Calculator app from the app list and click on it to see its other options.
• After that, select the Advanced options and go to the Reset section and then click on the Reset button to reset the Calculator app.

Note: You also have the option to reinstall the Calculator app. All you have the option to visit Microsoft Store and from there, uninstall the Calculator app.