How to Fix MULTIPROCESSOR_CONFIGURATION_NOT_SUPPORTED error in Windows 10

0X80070005 - What is it?

0x8007005 is a Windows Error Code. You may come across this error if you don’t have the appropriate permission to install a particular Windows update. It is prompted as ‘Access Denied’ error message. Solution

Error Causes

The error code 0x80070005 usually triggered because of 2 reasons:

1. Some updates require administrative permissions to be installed
2. Due to malware and viruses

Further Information and Manual Repair

If you face this error while installing Windows updates on your PC, it is advisable to fix it immediately. By taking timely actions, you can update your PC easily and in case if the cause of the error code 0x80070005 is malware or some virus, you can stop it from causing more and serious damage to your system.  Sometimes malware and viruses can lead to data loss. To avoid such damages here’s what you need to do:

Cause: Updates require administrative permission

Quick Fix: If the 0x8007005 error occurs on your system due to administrative permission issues, then the best way to fix this error right away is to log on as an administrator. If there are many user accounts on your PC, then to resolve this error, make sure you log on using the user account that has administrator permissions on the computer. Once you log on as an administrator, now try to install the updates again.

Cause: Malware and Viruses

Quick Fix: If the error 0x80070005 occurs because of malware infection, the best way to resolve this error would then be to open your antivirus software and run a scan to detect the malware. However, if you don’t have antivirus software installed on your system, then it is advisable to download the software immediately. Download antivirus software. To be on the safe side download Microsoft Safety Scanner. Click on the run when prompted. Once the scanner is installed on your PC create a shortcut to Safety Scanner on your computer desktop so that it is easily accessible. Now double click on the icon and click on the full scan tab to start scanning for malware and viruses on your system. After the scan is complete, you will see a list of viruses on your PC. Now remove them all by hitting the delete tab and then repair. Now try installing the updates again. By following these quick-fix techniques, you can easily resolve the error 0x80070005 on your system by yourself, without calling an IT professional.

As you know, Windows operating system comes with tons of features. Some of which are not intended to be used by normal customers or users directly which means that only a small percentage of the huge user base of the operating system leverages the use of such features. However, they’ve added some major value to the feature list of the operating system. You can find these features under the “Turn Windows Features on and off” option. This indicates that if you want to, you can just type in “Turn Windows Features on and off” in the search box and then enable any feature that you want to enable. Aside from that, there are other ways you can disable or enable the optional Windows Features in your Windows 10 computer.

Option 1 – via Control Panel

• Open Control Panel and select Uninstall a Program.
• After that, select the “Turn Windows features On or Off” option on the left side.

Option 2 – via Command Prompt

• Tap the Win + X combination on your keyboard or right-click on the Start button and then click on Command Prompt (Admin). Alternatively, you can also type “cmd” in the Cortana search box and right-click on the Command Prompt icon, and select the “Run as administrator” option.
• If a User Account Control or UAC prompt appears, click on Yes.
• Next, type in the following command to see the list of the available features.

DISM /online /get-features /format:table | more

• Now all you have to do is copy the name of the feature that you want to enable and for you to do that, you need to execute the following command:

DISM /online /enable-feature /featurename:[Enter the name of the feature here] –All

Note: Now if you want to disable a feature that’s already enabled in your computer, refer to these sub-steps:

• First, you need to check what features are enabled, and for you to find out, enter this command: DISM /online /get-features /format:table | find “Enabled" | more
• And if you want to check the detailed information about a particular feature, you can enter this command: DISM /online /get-featureinfo/featurename:[Enter the name of the feature here]

Option 3 – via Windows Powershell

As you know, the Windows Powershell is a very important tool in Windows 10, and a powerful one at that since you can do a lot of things using this command line. So while you use this tool you need to populate the list of available features first and then you have to download the feature your desired feature.

• Search for PowerShell in the Cortana search box and then run it with administrator privileges.
• Next, type in the following command to populate the list of available features:

Get-WindowsOptionalFeature –Online

• After that, enter the following command to install any feature you want to enable from the list of available features:

Get-WindowsOptionalFeature -Online -FeatureName *Type feature name*

• Now enter the following command to enable your desired feature:

Enable-WindowsOptionalFeature -Online -FeatureName “Type feature name” –all

• And if you want to disable any enabled feature, just enter the following command:

Disable-WindowsOptionalFeature -Online -FeatureName “Type feature name”

Option 4 – via an external installation source

You also have the option to fetch the latest features from an updated offline source. The source could be an ISO any other type of image or just a folder. So you need to decide if you want to use Windows Powershell or Command Prompt.

• If you want to use Command Prompt, just enter this command: exe /online /enable-feature /featurename:< /All /Source:<Enter the path of the feature here>
• If you want to use Windows Powershell, use this command: Install-WindowsFeature –Source “<Enter the path of the feature here>”

Note: If you want to get the latest features, you need to get the latest version of the image of the operating system that you are trying to install the feature from.

Error Code 0x800F0922 – What is it?

Error Code 0x800F0922 refers to an issue with downloading the newest version of Microsoft Windows, Windows 10. It could mean that your PC doesn't have enough free space in the System Reserved partition, or that it couldn't connect to the Windows Update servers. This issue is not very common, most users will never see this error code. Some, however, will need to follow the below fixes in order to download and upgrade their systems properly. Common symptoms include:

• Dialog box appears with the Error Code 0x800F0922
• Microsoft Windows 10 upgrade is unsuccessful and/or incomplete
• Users are unable to open applications after attempting the Microsoft Windows 10 upgrade

Solution

Error Causes

There are two standard reasons why this error occurs during the Microsoft Windows 10 upgrade.

• There may not be enough free space in the “System Reserved” partition of your hard drive.
• Error Code 0x800F0922 could also mean that your PC was not able to successfully connect to the Microsoft Windows update servers due to a VPN (virtual private network) connection in your home or office network.
• The .Net framework installation portion of the Windows 10 upgrade fails.

Further Information and Manual Repair

Error Code 0x800F0922 as stated is somewhat rare, but it does occur occasionally. Users who have experienced this error while attempting to upgrade their system to Microsoft Windows 10 have the following options for do-it-yourself fixes.

Method 1:

Use this method if you are operating on a network that uses a VPN connection.

1. Disconnect from your office or home network.
2. Turn off your VPN software.
3. Run the Microsoft Windows 10 upgrade.
4. Restart your PC.
5. Reconnect to your home or office network.
6. Turn your VPN software back on.

Method 2:

This will run the Windows 10 Update troubleshooter that is built into your PC.

1. Click on the Windows icon on the lower-left corner of your desktop.
2. Press the “w” key to open the SEARCH function.
3. Type “troubleshooting” in the search field and press ENTER
4. When the troubleshooting window opens, select the “view all” option from the left window pane.
5. Select “Windows update”.
6. Select “advanced” and then choose the “run as administrator” option.
7. Click the NEXT button and follow the on-screen prompts.
8. This troubleshooter will walk you through the steps needed for your specific situation.

Method 3:

This method will run the DISM (deployment image servicing and management) tool built into your PC.

1. Press the “windows key” on your keyboard followed by the “x” key.
2. Select the “command prompt admin” option.
3. Type the command “exe /online /cleanup-image /scanhealth” into the command prompt field and press ENTER.
4. Wait for the scan to run completely.
5. When the scan is complete, a message will appear telling you that “the operation completed successfully”.
6. Type the command “dism.exe /online /cleanup-image /restorehealth” into the command prompt field and press ENTER.
7. This will take a while to run completely, but it will restore any missing or corrupted files necessary for the Microsoft Windows 10 update.
8. Restart your computer.
9. Attempt the Windows 10 upgrade again.

Method 4: Use this option if you believe the issue is a result of the .NET framework being disabled.

1. Press the “windows” key followed by the “x” key.
2. Select the “control panel” option.
3. When the control panel window opens, click your cursor in the search field on the upper right hand corner.
4. Search for the phrase “windows features”, then select the link “turn Windows features on or off”.
5. Select the check box (add a check) to the box next to “.Net framework”.
6. Click the OK button.
7. Proceed with your Microsoft Windows 10 upgrade.

To resolve this, all you need is third-party software to increase the size of the System Reserved partition. One of the four methods listed above should fix your Error Code 0x800F0922 issue and allow for a successful Windows 10 upgrade. On an occasion where there isn't enough space, use third-party software to increase the size of the System Reserved partition.  If you do not possess the technical expertise required to accomplish this yourself or do not feel comfortable doing so, download and install a powerful automated tool to get the job done.

What is Stop Error 7B?

Stop error 7B is a blue screen of death error code that occurs during Windows XP setup or after installation. The error message is displayed in either of the following formats:

• STOP: 0x0000007B (parameter1, parameter2, parameter3, parameter4)
• INACCESSIBLE_BOOT_DEVICE
• ‘A problem has been detected and Windows has been shut down to prevent damages’
• Setup has encountered a fatal error that prevents it from continuing.
• Setup cannot continue. Power down or reboot your computer now.

Solution

Error Causes

There is no one particular cause for this error. The Stop error 7B may be triggered due to multiple reasons. These include:

• Boot Sector Viruses
• Device Driver Issues
• Poor Windows XP installation
• Registry Corruption

If you come across this error code on your PC, it is advisable to fix it right away particularly because it is a blue screen of death error that can cause severe damages to your system. It can lead to system failure, crash, and valuable data loss.

Further Information and Manual Repair

Here we’ve listed for you the best PC repair solutions to resolve and fix stop error 7B.

Cause: Boot Sector Viruses

Solution: Stop error 7B can occur when infected with a boot sector virus. If this is the cause, then first download a powerful antivirus on your system. After downloading it, run it to scan your PC for viral infection. Immediately delete the viruses if found. However, if the virus is too powerful, the antivirus may fail to remove it. In such an event, you will have to repartition and format your hard disk and then later reinstall Windows XP.

Cause: Device Driver Issues

Solution: If the boot controller is not properly configured or the driver is not updated, Stop error 7B can occur.  When this happens, simply restart your system and press F8 to go to the advanced boot options. Here choose the Last Known Good Configuration option. After that boot into Windows and then perform a system restore. Now go to the start menu and type Device Manager in the search box. To access the Device Manager window it may prompt you to enter an administrator password, insert it to proceed. Now go to Device Manager and perform a driver rollback to reinstall the drivers generating this stop error. By following these simple steps you can easily resolve device driver and configuration issues.

Cause: Poor Windows XP Installation

Solution:  In this case, you will have to perform a Windows start-up repair. This can be done by booting Windows XP from CD. Simply press enter at setup Windows Screen when prompted. Then press R to repair Windows XP installation. This procedure copies the original Windows files over the bad ones.

Cause: Registry Corruption

Solution: Sometimes the stop error 7B is also triggered by the registry corruption. When this happens, it is advisable to download and run Restoro software for PC scan and repair. Restoro is a powerful, advanced, and highly functional registry cleaner. It is deployed with intuitive algorithms that detect registry issues and errors like Stop error 7B on your system in seconds.  It wipes out clutter from your hard disk, repairs damaged files and the corrupted registry. It is safe, efficient, and bug-free. It is also compatible with all Windows versions. In addition to this, it is also embedded with other utilities like an antivirus, a system optimizer, and Active X controls, and a class ID scanner. Click here to download Restoro and resolve to stop error 7B on your PC immediately!

It is a fact that Blue Screen of Death errors can give you a headache for you will have a hard time fixing it as it is one of the most difficult errors you can encounter on your Windows computer. One of these BSOD errors is the UNEXPECTED KERNEL MODE TRAP error. If you receive this kind of error then it means that the operating system was not able to catch a trap or an exception generated by the CPU. This BSOD error has an error code 0x00000007F and indicates that the Intel CPU generated a trap that the kernel failed to catch. One of the most likely causes is hardware failure due to faulty memory. Aside from this cause, you also have to track down other probable causes for this problem like corrupted system files, incompatible drivers or programs, faulty hardware, and even dusty components, and so on. To fix the UNEXPECTED KERNEL MODE TRAP BSOD error, here are some suggestions that might help.

Option 1 – Uninstall the programs you installed recently

Chances are, some programs that you just installed might be the one that’s causing the BSOD error. Thus, you need to uninstall the program to resolve the problem.

• In the search box, type in “control” and then click on Control Panel (desktop app) among the search results.
• After that, select Programs and Features from the list which will give you a list of all the programs installed on your computer.
• From there, look for the concerned program and select it and then uninstall it.

Note: If you have downloaded the app from the Windows Store, you can simply right-click on it from the application list and then uninstall it. In addition, you might also want to check the hardware components of your computer that might not support the operating system itself. You can disconnect all the external devices like USB drives, scanners, printers, etc., and then reboot your PC. After that, add the devices again one after the other and check if the BSOD error is now fixed or not. Moreover, you can also perform a clean boot to make things easier for you.

• 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” checkbox 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” checkbox.
• 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.)

Option 2 – Update your device drivers

• Tap the Win + R keys to launch Run.
• Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
• After that, a list of device drivers will be displayed. Look for the device driver you and then select either “Update driver” or “Uninstall device”. And if you find any “Unknown device”, you need to update it as well.
• Select the “Search automatically for updated driver software” option and then follow the instructions to complete the process.
• If you have chosen to uninstall the driver, follow the screen options to complete the process and then restart your PC.
• Connect the device and Scan for hardware changes – you can see this option under Device Manager > Action.

Option 3 – Use the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that helps users in fixing BSOD errors like UNEXPECTED KERNEL MODE TRAP. 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.

Option 4 – Run the Windows Memory Diagnostic tool

You can use the Memory Diagnostic tool in Windows to check RAM. Before you use this tool, make sure you save all your important work.

• Tap the Win + R keys to open the Run dialog box.
• Next, type in “mdsched.exe” in the field and hit Enter to open Memory Diagnostic.
• After that, the Windows Memory Diagnostic will give out two options such as:

1. Restart now and check for problems (recommended)
2. Check for problems the next time I start my computer

• Select any of the given options. After that, your computer will restart and check for memory-based issues upon the restart. If there are any issues, it will automatically them.

Option 5 – Disable Memory caching in the BIOS

You can also disable memory caching in the BIOS to fix the UNEXPECTED KERNEL MODE TRAP error.

• Open the BIOS Setup screen.
• Next, go to Advanced > Cache Memory and then disable it.
• Tap the F10 key to save the changes made and restart your computer.

Option 6 – Run System File Checker

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow
• Restart your computer once the scan is completed.

Option 7 – Clean your hardware components for dust

Cleaning your computer’s hardware components for dust might also help in resolving the UNEXPECTED KERNEL MODE TRAP error. Make sure to use a soft cloth in cleaning the hardware as well as a small blower. Moreover, ensure that you do not damage any parts with moisture or cause harm to any circuits while you’re at it.

When you get the “HTTP Error 304 Not modified” error in Google Chrome, Mozilla Firefox, or Microsoft Edge, there can be lots of reasons why you’re getting this error. The HTTP Error code 304 means redirection, technically. It could be that the DNS has some issues or the cache is already reusing the existing information to look for a website or it could also be that your browser might be infected. In this post, we will show you what you can do to fix the “HTTP Error 304 Not modified” error when you are not able to open a website on your browser. Here are the exact details of the error message:

“This status code is returned if the client has already downloaded resources since the last visit and is displayed to notify the client browser that the requested resources is already stored in the browser cache which hasn’t been modified.”

Follow each one of the given fixes below to resolve the issue.

Option 1 – Clear the browsing data on your browsers

The first thing you can try is clearing the browsing data on your browsers.

Microsoft Edge:

• Open Microsoft Edge.
• Then click on the three horizontal dots to open the menu.
• From there, click on Settings. And under Settings, click the “Choose what to clear” button under the Clear browsing data section.
• Next, check all the checkboxes and then click the Clear button to clear the browsing data in the Edge browser.
• Restart Edge.

Google Chrome:

• Open Chrome and then click on the three vertical dots located at the top of the window.
• Then click on Settings.
• After that, click on Advanced. And from the Privacy and Security section, click on the “Clear browsing data” option.
• Now click on the CLEAR DATA button.
• Restart Chrome.

Mozilla Firefox:

• Open Firefox and then click on the three horizontal lines to open the menu.
• From there, click on Options.
• Next, select Privacy & Security.
• After that, click on the Clear Now button under the Cached Web Content section and then click the Clear All Data button under the Site Data section.
• Restart Firefox.

Option 2 – Flush DNS and reset the TCP/IP

There are some websites that don’t resolve since the DNS in your computer still remembers that old IP address. And so you need to flush the DNS as well as reset the TCP/IP on your computer.

• Click the Start button and type in “command prompt” in the field.
• From the search results that appear, right-click on Command Prompt and select the “Run as administrator” option.
• After opening Command Prompt, you have to type each one of the commands listed below. Just make sure that after you type each command, you hit Enter
  • ipconfig /release
  • ipconfig /all
  • ipconfig /flushdns
  • ipconfig /renew
  • netsh int ip set dns

After you key in the commands listed above, the DNS cache will be flushed and the TCP/IP will reset.

Option 3 – Try using the Google Public DNS

Changing your DNS to Google Public DNS might also help you in fixing the “HTTP Error 304 Not modified” error. To do so, follow the steps below.

• The first thing you have to do is right-click on the network icon in the Taskbar and select Network and Sharing Center.
• Next, click on the “Change Adapter Settings” option.
• After that, search for the network connection that you are using to connect to the internet. Note that the option might be “Wireless Connection” or “Local Area Connection”.
• Right-click on your network connection and click on Properties.
• Then select the new window to choose the “Internet Protocol 4 (TCP/IPv4)” option.
• After that, click on the Properties button and click the checkbox in the new window for the option “Use the following DNS server addresses”.
• Type in “8.8.8.8” and “8.8.4.4” and click OK and exit.

Option 4 – Run Cleanup Tool and disable Extensions

You might also want to run the Cleanup Tool in Chrome if you are using this browser as well as disable all the extensions as some of them, if not all, might be the reason why you’re getting the “HTTP Error 304 Not modified” error.

Windows 11 is coming soon, from its typical view and color scheme, Windows 11 will natively support dark mode. The dark mode is very popular in many applications today, some large companies like Adobe, Autodesk, and many more have already adopted a dark color scheme for their software so it is logical for others to follow and Microsoft is aboard for it. The dark mode itself has its benefits, for people who work on computer for longer period of time dark mode inside applications will throw less white and blue light on their eyes making workhours easier and pleasant on them. As a person who does indeed spend a lot of time in front of the screen, I would advise you to switch to dark mode regardless of the time that you spend with a computer, your eyes will be grateful.

Switching to Dark mode in Windows 11

1. Open Windows 11 Settings by pressing ⊞ WINDOWS + I
2. Click on Personalization on the left sidebar
3. On the right side click on Color
4. In color options click on the drop-down menu right next to Choose your color
5. Select Dark

Your choice will be applied right away and you can safely close settings.

Windows Vista had in it animated wallpapers on desktop but sadly how they were heavy on system resources Microsoft abandoned the idea. Moving forward a couple of years later we have Windows 10 but still, we do not have live animated wallpapers. Since I am the kind of person who does not want to wait on Microsoft and now it is time to bring animated wallpapers back I am going to make one all by myself and you are welcome to join the ride and do the same for you as well. Enough talk, let's dive into how we can make animated wallpaper for our Windows 10.

Choosing the application

First, we will need some form of application which can we look at our animated wallpapers and since they are animations it means video, so we will need a video player and what better choice than a VLC player, an open-source light weighs all-format player. Get a VLC player from here and install it.

Finding video source

The next thing is to of course have some looping video that we will use as background. There are many sites and ways to get seamless loop videos, I use this youtube channel for my backgrounds. Altho you can use any video footage you want it is recommended that it is not too long, that it is hi-resolution so we do not have pixels on-screen, and if you can, get it as seamless since we do not want to see stutter when the video is lopped from the beginning. So hopefully you have desired video and VLC player installed.

Putting it all together

Copy the following code and paste it into your search bar in Windows to open the Startup folder, or navigate to the Startup folder yourself via file explorer if you know where it is. %appdata%\Microsoft\Windows\Start Menu\Programs\Startup Now, next thing is to copy and past the VLC shortcut into this folder so it is started when Windows is first time booted. Right-click on the shortcut and in the edit field paste this: "C:\Program Files\VideoLAN\VLC\vlc.exe" --video-wallpaper --qt-start-minimized --no-qt-fs-controller --repeat --no-video-title-show --qt-notification=0 "C:\videopath\filename.mp4" where "C:\Program Files\VideoLAN\VLC\vlc.exe" is the path where VLC is installed, point this to where you have installed it "C:\videopath\filename.mp4" is the path where you have your video that you wish to use as animated wallpaper. Please note also that in my case there is mp4 as an extension but it does not need to be mp4, just use any extension VLC can open and play.

Conclusion

And that's it, you have successfully made an animated background or live wallpaper on your Windows 10 computer. You can change your wallpaper anytime by editing shortcut and giving it a new path to a new video or simply overwrite the existing one with a new baring same name.

Stop C00002lA Fatal System Error- What is it?

C00002lA Fatal System Error is a blue screen of death error that may occur when you start your Windows NT 4.0 based computer. This error causes the screen to turn blue and the system also shuts down. The stop C000021A error message is displayed in the following format:

Stop c000021a {Fatal System Error} The session manager initialization system process terminated unexpectedly with a status of 0xc0000017 (0x00000000, 0x0000000) The system has been shut down.

Error Causes

The stop C000021A error occurs when either Crsrss.exe or Winlogon.exe fails. When the Windows NT kernel identifies that either of these processes has failed, it stops and the error code stop C000021A appears on the computer screen. Here are some of the underlying causes for the stop C0000021A error:

• The incompatible third-party program
• Hard disk issues
• Service pack installation has failed
• Mismatched system files have been installed
• Bad and invalid registry keys

Further Information and Manual Repair

To resolve the stop C000021A Fatal System Error on your PC try the following solutions:

• Remove Incompatible Third Party Programs

If the error occurred after you recently installed a new program, then it is advisable to remove that program. The error occurs due to the incompatibility of the program. To remove the program go to the start menu and click on the control panel. Now click on Add/Remove Program tab and double click on the program name that you recently installed and remove it from the list. Once removed, not reboot your PC. Reinstall a compatible program and run it. It is most likely to resolve the issue. However, if the stop C000021A error still occurs, then it means the problem is critical. It is related to the registry.

• Repair and Restore the Registry

This procedure is slightly long and tricky. To try it, you need to be technically sound. Here’s what you have to do: first create a parallel installation of Windows NT. Start your PC to the parallel installation and then open the Registry Editor. On the Registry Editor’s Windows menu click HKEY_LOCAL_MACHINE on Local Machine and then click Load Hive. Now type the path %systemroot%system32configsystem into the System hive of the prior installation. Then click open. Here you will be prompted to enter the name of the key, type TEST. Note the setting for the current DWord value in the preceding registry key. This is 0x1 and is denoted by CURRENT:Reg_Dword: 0x1. This value indicated that the Current Control Set for your original Windows NT installation corresponds to ControlSet001 in this window. Now if the value is 2, it indicated that the Current Control Set corresponds to ControlSet002. Now locate the following registry key: HKEY_LOCAL_MACHINETESTControlSetXXXControlSession Manager. XXX is the Current Control Set Value. And delete any pending file rename operation entries. Then click TEST hive and then click Unload Hive. After that again repeat the process, open the registry menu and click load hive, here type the path %systemroot%system32configSoftware to the Software hive of the prior installation and then click open. Now you type TEST 2 when you are prompted for the name of the key. Remove any pending file rename operations entries in the following registry keys: HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnce HKEY_LOCAL_MACHINETEST2MicrosoftWindowsCurrentVersionRunOnceEx Now click TEST2 hive and then click unload hive. Quit the Registry Editor and then restart your original installation. This will resolve the stop C000021A error.

KMODE_EXCEPTION_NOT_HANDLED – What is it?

Some users installing or upgrading to Windows 10 experienced the theKMODE_EXCEPTION_NOT_HANDLED Blue Screen of Death (or commonly known as BSOD) error. This error can be due to different types of things, ranging from software to driver issues. When you experience this BSOD error while trying to install Windows 10, it will prompt you to restart your computer every single time you experience it. In most cases, you will also not be able to proceed with the Windows 10 set-up.

Solution

Error Causes

The “KMODE_EXCEPTION_NOT_HANDLED” error is normally caused by:

• Hardware incompatibility
• A faulty device driver or system service

Further Information and Manual Repair

You won’t be able to successfully upgrade or set up Windows 10 if you continue to encounter this BSOD error. Note that this error will always prompt your computer to restart every time it happens, preventing you from completing the Windows 10 set-up.

If you’re not tech-savvy or not capable of debugging this issue, it’s highly advisable to proceed with the basic troubleshooting techniques available in this link.

After troubleshooting, below you’ll find a few solutions to rectify the issue.

Method 1 – Check The Cause of The BSOD Error

Two common causes of the KMODE_EXCEPTION_NOT_HANDLED issue are hardware incompatibility and faulty device driver or system service.

If you experience this error, check first if any of your newly installed hardware is compatible with Windows 10. You can find the required hardware for Windows 10 from this link. 

If all your hardware is compatible with Windows 10, you might need to check the device driver or system service. Review the bug check message. If any of the drivers you have is listed in the message, either disable or uninstall them before upgrading or setting up Windows 10.

You might also find it useful to check the System Log available in the Event Viewer for other error messages that can help you figure out the driver or device that’s causing the error. Running hardware diagnostics can also be useful.

Method 2 – Disable (or preferably uninstall) Software Before Upgrading

If you’re upgrading Windows 10 from Windows 7 or Windows 8.1, you might need to disable or uninstall the software first. First, try uninstalling your Antivirus utility before starting the upgrade. Restart a few times before starting the Windows 10 installation. If you’re upgrading using the Windows 10 update, make sure that you disconnect from your Wi-Fi or Internet LAN (Ethernet) connection as soon as the download reaches 100% before attempting to start the set-up. Other users also reported that the cause of the KMODE_EXCEPTION_NOT_HANDLED issue is BitDefender. If this is what happened in your case, it will show in the error message such as KMODE_EXCEPTION_NOT_HANDLED (bdselfpr.sys). Users reported that a common solution for this is renaming the file. In the case of BitDefender, try renaming it to bdselfpr.s__. However, make sure to do this cautiously. Sometimes, renaming a file will even do more damage than good.

Method 3 – Disable/Disconnect From Hardware

If you’re connected to any general USB devices (such a smart card reader), disable it. If your computer is connected to other external devices, disconnect all of them. Examples of this include gaming controllers, printers, external hard disk, USB keys, and other non-essential devices).

Method 4 – Other Troubleshooting Steps

Other troubleshooting steps include:

• Upgrade using an .ISO file, instead of directly upgrading from Windows Update. When you do this, make sure you’re disconnected from the Internet during installation. If the process started and you forgot to disconnected, it’s best to restart the installation.
• If you’re connected to a domain while trying to set up Windows 10, disconnect and use a local account.
• If you’re using a SCSI hard disk, connect a thumb drive with the drivers for your storage device. While Windows 10 is setting up, click on the Custom Advanced Option. Using the thumb drive, use the Load Driver command to load the SCSI drive.
• Another possible cause of this error is due to BIOS incompatibility. BIOS issues can be solved by upgrading your version of your system BIOS. If you don’t know how to do this, refer to your BIOS manufacturer’s website.

Method 5 – Use A Trusted Automated Tool

If you still experience the error after doing the methods above, you might want to try a powerful and trusted automated tool to fix the job.