Kernel Mode Heap Corruption Error in Windows

It is common to run multiple programs and applications at the same time and it’s important to be able to switch between them using their Taskbar icons or using the usual Alt + Tab shortcut. However, there are times when you might suddenly find that neither of the aforementioned methods worked and you will no longer be able to switch between programs in the Windows Taskbar. To fix this issue, refer to the options given in this post. For instance, when you have multiple instances of Microsoft Edge running and every time you press the Alt + Tab combo nothing happens so you are left with no choice but to minimize everything and then hover your mouse on the icon and switch between the instances of Edge. You will also notice that the right-click on the taskbar won’t respond back and will only keep on showing the loading circle icon. Here are a few tips you can follow to fix the issue with the Windows 10 Taskbar.

Option 1 – Try to restart the Windows Explorer

This is one of the basic things you can try as restarting Windows Explorer helps in refreshing the user interface and makes most of the things work in relation to the user interface.

• To get started, tap the Alt + Ctrl + Del keys to pull up the Windows Task Manager.
• After opening Task Manager, look for “explorer.exe” under the list of programs.
• Once you find the explorer.exe, right-click on it and click Restart.

Option 2 – Try changing the Foreground Lock Time

Aside from restarting Windows Explorer, you could also try changing the Foreground Lock Time to fix the issue with the Taskbar.

• Tap the Win + R keys to open the Run dialog box.
• Then type in regedit in the field and tap Enter to open the Registry Editor.
• Next, go to this registry key – HKEY_CURRENT_USERControl PanelDesktop
• Next, change the ForegroundLockTimeout value from200000 to 0. After that, it will make sure that no other application will take away the focus from your current program or application. It could be that some other application has taken away the focus and even when you try to actually switch, the focus gets back to the old one. Anyhow, since you already changed the value of ForegroundLockTimeout, it will ensure that the focus is not switched.

Note: If you are running some Full-Screen applications there are some devices especially the gaming ones, disable the Windows key to make sure that you won’t be able to switch. If this is the case, you need to make some modifications to the Full-Screen games.

Error Code 0x80070004 on Windows 10 – What Is It?

Some users trying to upgrade from Windows 7 or Windows 8/8.1 reported experiencing installation rollback with error code 0x80070004. This error normally appears when the Computer Name is set to names that can’t be used for the computer. It’s also possible this error occurs if users or program files folder were redirected to a different partition.

Solution

Error Causes

The Error code 0x80070004 on Windows 10 is normally caused if any of the following were used as the Computer Name and the user tried to upgrade to Windows 10:

• System (or SYSTEM)
• SELF
• LOCAL
• Network

Failure to fix this error message might result in others, including error code  0xc0000001. 

Further Information and Manual Repair

If you don’t solve this error, you won’t be able to upgrade from Windows 7 or Windows 8/8.1 to Windows 10. Note that this error will continuously bring you back to the original OS unless fixed.

Please note that if you’re not confident in doing these steps, you might want to consider seeking the help of an expert or using an automated tool that will help fix this.

Here are a few methods to try.

Method 1: Check and Change the Computer Name

The most common cause of this error is if your computer uses any of the following reserved names:

• LOCAL
• System (or SYSTEM)
• Network
• SELF

These reserved names are not meant to be used as computer names. If this is what your computer uses and you try to upgrade to Windows 10, you will surely get this error. Check your computer name and if you see any of the reserved names, change it right away.

Changing Computer Name in Windows 8.1

If you’re trying to upgrade from Windows 8.1, you can change the name of the computer by following these steps:

• Step 1: Open the Start menu then simply type “rename computer”. After that, choose “Rename this computer”
• Step 2: A dialog box will open. Just click the “Change” button
• Step 3: A new dialog box will open. Type the new name. Click Apply then Ok.

Changing Computer Name in Windows 7

If you’re trying to upgrade from Windows, you can follow the steps below to change the name of your computer.

• Step 1: Go to the Start menu then on the Computer section, right-click the mouse and choose “Properties”.
• Step 2: A new dialog box will appear. Go to “Computer name, domain, and workgroup settings” then click “Change settings”. In case you’re asked for administrative access, make sure to grant it.
• Step 3: Find the “Computer Name” tab then click “Change”
• Step 4: Change the computer name and click Ok.

Method 2: Fix the “Users” directory issue

If the first method doesn't work, it probably means the computer name isn’t the cause of this error. Another reason why users experience Error code 0x80070004 when upgrading to Windows 10 is if the “Users” directory was relocated. So, when you try upgrading to Windows 10, the installer wasn’t able to find the user profiles on the “%systemdrive%”, where the current operating system is installed.

If you changed or moved any of the Users, Program Data, or Program Files folders, this will cause the error. Before you upgrade to Windows 10, you might be required to reset or reinstall your current operating system (Windows 7 or Windows 8.1).

If you haven’t made any changes or haven’t moved any of the mentioned folders, there’s a great chance that your users' profiles are corrupted. You can also reinstall your current operating system. However, you might want to check for the corrupter user profile first. To do this, follow the steps below:

• Step 1: Go to the Start menu and type System
• Step 2: Click System  then go to the Advanced tab
• Step 3: Go to Settings, which you’ll find under User Profiles

On the Users Profiles, make a copy of all the accounts somewhere. Sign out from the current user account then try logging in back using the accounts you’ve copied. For each account, you get an error, delete it. However, make sure that you don’t delete the UpdateUser and Administrator account ever.

After this is done, try upgrading your operating system to windows 10 again.

Method 3: Try a trusted and secured Automated Tool

If the above methods still not useful, you might want to rely on an automated tool. Find a secured and trusted tool. It will help fix this issue.

There are a lot of users who use their Windows 10 PCs to create and access data on their servers using their network. However, some of them reported getting an error saying that the server is not accessible. Here’s the full content of the error message:

“\server is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. Logon Failure: The target account name is incorrect.”

If you are among the users who experience the same issue, read on as this post will help you resolve this error when accessing your server. But before you start troubleshooting the problem, you might want to perform System Restore, especially if tend to create one. To use System Restore, here’s what you have to do:

• 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 in fixing the ACPI.sys Blue Screen error now’s the time for you to make use of the potential fixes laid out below.

Option 1 – Try rebooting your router

The first thing you can try to do to fix the error is to simply restart your router. All you need to do is reboot the router from its Admin panel or you can also turn it off manually and turn it back on after a couple of seconds so that it can completely reboot. Once you’re done, try accessing your server again and see if the error is now fixed.

Option 2 – Try checking the status of the Workstation Service

You might want to check the status of the Workstation Service as the error might have something to do with it.

• Tap the Win + R keys on your keyboard to launch the Run utility.
• Then type “services.msc” in the field and click OK or hit Enter to open the Windows Services Manager.
• After opening the Services Manager, you will see a list of all the services on your computer and from there, locate the Workstation Service.
• Double click on the Workstation Service to open its Properties.
• Next, Stop the Service and Start it again or you can also right-click on it and select Restart and then make sure that its Startup type is set to Automatic.
• Now restart your computer and check if the error is fixed.

Option 3 – Try to change the File Sharing Connections setting

You can also try to change the File Sharing connections setting. All you have to do is go to Control Panel > Network and sharing center > Advanced sharing settings > File sharing connections. From there, you need to select “Enable file sharing for devices that use 40 or 56-bit encryption and check if it helps in fixing the problem. If not, undo the changes you’ve made and proceed to the next given option.

Option 4 – Try checking the Network Configuration

Checking the Network Configuration can also help you fix the error. Refer to the steps below to do so:

• Right-click on the Wi-Fi connection or on the Ethernet connection icon located in the system tray.
• Then select open Network and Internet Settings and then click on the “Change Adapter Options”.
• After that, a new window will appear and from there, select the network connection that connects your computer to your network – this can either be a Wi-Fi connection or Ethernet connection.
• Right-click on that connection and select Properties where you will see a list of items.
• Select the Internet Protocol Version 4 or Internet Protocol Version 6 from those items according to your system requirement.
• Then click on the Properties button.
• Check if everything is now configured as to how it is supposed to be and then check if the error is resolved.

Option 5 – Try to reset Winsock, TCP/IP & Flush DNS

You might also want to try resetting Winsock, TCP/IP, and flushing DNS might help you resolve errors. To do so, follow these steps:

• Right-click on the Start button and click on Command Prompt (administrator) so you can pull up an elevated Command Prompt.
• After that, execute each one of the commands listed below. And after you typed in one after the other, you have to hit Enter.

1. netsh winsock reset – type in this command to reset Winsock
2. netsh int ip reset resettcpip.txt – type in this command to reset TCP/IP
3. ipconfig /flushdns – type in this command to flush the DNS cache

• Next, restart your PC and check if the problem’s fixed.

Option 6 – Run the Network Adapter Troubleshooter

• Open the Search bar on your computer and type in “troubleshoot” to open the Troubleshoot settings.
• Next, scroll down and select the “Network Adapter” option from the right pane.
• Then click on the Run Troubleshooter” button.
• After that, your computer will check for any possible errors and will pinpoint the root cause of the problem if possible.

Search Donkey is a Potentially Unwanted Program for Windows developed by Western Web Applications, LLC. This program may inject ads into your browsing sessions, giving you false search results and advertisements.

As described by Western Web Applications: “Search Donkey is entirely free to use. To keep Search Donkey free, we’ve partnered with high-quality ad providers and you may see additional ads when Search Donkey is installed.

While installed, Search Donkey will keep track of your web search queries, allowing it to let you know what pages you already visited, however, this data is also used to better target personal unwanted ads.

Search Donkey has been flagged as a Potentially Unwanted Program (PUP) by several anti-virus scanners, and their website is blacklisted by Google, giving warning to whoever visits it, and due to the nature of this application, it is not recommended to keep on your computer.

About Adware

Exactly what is Adware? If you have ever owned a computer, then you’ve probably heard the word numerous times, but it is still beneficial to define it. The term “adware” is actually a short form of advertising-supported software and it includes programs that are solely designed to display ads on a computer. A kind of malware, it will come bundled right in with the software package that a user either installs or accesses. Shareware or freeware programs are often times packaged with adware. If adware penetrates your system without you knowing and sends information about you or your PC to 3rd parties, then it is spyware. Quite often, adware changes your web browser settings to open pop-up adverts or modifies browser homepage and default internet search engine to some unwanted website. Adware is a common problem that affects a large number of PCs around the globe. If your computer doesn’t have any anti-malware software then it’s very likely it could get infected with adware as well as other malware.

Adware and its effects on your PC:

Adware could generate and display plenty of ads of all sorts which in turn disrupt the functions of your personal computer while browsing the net. Pop-ups might also show up on your computer’s desktop even when you’re not online. Adware results in a reduction of available memory and processing power, or resources. It also causes a slow net connection because adware consumes bandwidth whenever it retrieves adverts from the internet. Adware was originally created to support companies to generate income when they offer the software away free of charge. However, adware nowadays displays hundreds of adverts which will cause your PC to slow down and even crash.

Adware prevention:

As we discussed, adware could potentially be harmful to your computer, generally not by itself, but by bringing other problems to you. A top-quality antivirus program has the capability of permanently removing adware. We recommend Safebytes Anti-Malware, one of the top-rated anti-malware programs by world-renowned industry experts. It will act either as a preventative tool stopping websites or software installations that contain adware or as a removal tool for an already infected computer. To prevent adware, download software from websites that you trust. Never download from websites that you have never been aware of or tried before; Always study the end-user license agreement (EULA) of any application you want to install; You need to avoid freeware and shareware where possible; Lastly, watch out for ActiveX, since many adware and spyware companies make use of the technology to install their wares onto your computer system

Malware Blocking Internet And All Anti-Malware Software? Do This!

All malware is bad and the consequences of the damage will vary based on the specific type of malware. Some malware variants alter browser settings by adding a proxy server or modify the PC’s DNS settings. In these instances, you will be unable to visit some or all internet sites, and thus not able to download or install the required security software to eliminate the malware. So what to do when malicious software prevents you from downloading or installing Anti-Malware? There are a few options you could try to get around with this problem.

Remove viruses in Safe Mode

In Safe Mode, you can actually change Windows settings, un-install or install some program, and eliminate hard-to-delete viruses and malware. If the malware is blocking access to the internet and affecting the computer, launching it in Safe Mode will let you download antivirus and run a diagnostic scan while limiting possible damage. To enter into Safe Mode or Safe Mode with Networking, press the F8 key while the PC is starting up or run MSConfig and look for the “Safe Boot” options under the “Boot” tab. Once you’re in safe mode, you can attempt to install your anti-malware program without the hindrance of the malicious software. At this point, you could run the anti-malware scan to eliminate viruses and malware without hindrance from another application.

Switch over to an alternate browser

Some malware only targets certain browsers. If this sounds like your case, use another web browser as it could circumvent the malware. If you suspect that your Internet Explorer has been hijacked by malware or otherwise compromised by hackers, the ideal approach is to switch over to a different internet browser like Firefox, Chrome, or Safari to download your chosen computer security software – Safebytes Anti-Malware.

Create a portable USB antivirus for eliminating malware

Another solution is to make a portable antivirus program on your USB flash drive. Adopt these measures to run the anti-malware on the affected computer system. 1) Download the anti-malware program on a virus-free PC. 2) Connect the flash drive to a USB slot on the clean computer. 3) Run the setup program by double-clicking the executable file of the downloaded software, which has a .exe file format. 4) Select the flash drive as the destination for saving the software file. Follow the directions to complete the installation process. 5) Transfer the pen drive from the clean computer to the infected computer. 6) Double-click the Safebytes Anti-malware icon on the thumb drive to run the software. 7) Hit the “Scan Now” button to start the virus scan.

Detect And Remove Viruses With SafeBytes Anti-Malware

Today an anti-malware tool can protect the computer from different types of online threats. But wait, how to decide on the best one amongst countless malware protection application that’s available out there? As you might be aware, there are many anti-malware companies and products for you to consider. A few are well worth your money, but many aren’t. You need to choose one that is reliable, practical, and has a strong reputation for its malware source protection. Amongst few good applications, SafeBytes Anti-Malware is the strongly recommended software for the security-conscious individual. SafeBytes anti-malware is a trustworthy tool that not only secures your PC permanently but is also very easy to use for people of all ability levels. With its outstanding protection system, this tool will easily detect and remove most of the security threats, including adware, viruses, browser hijackers, ransomware, trojans, worms, and PUPs.

SafeBytes has outstanding features when compared to other anti-malware programs. Below are some of the great ones:

Real-time Threat Response: SafeBytes provides 100 % hands-free real-time protection and is set to check, block, and eliminate all threats at its very first encounter. They’re very effective in screening and getting rid of different threats because they’re constantly revised with new updates and safety measures. Robust, Anti-malware Protection: With its enhanced and sophisticated algorithm, this malware removal tool can identify and get rid of the malware threats hiding in the PC effectively. Internet Security: SafeBytes gives an instant safety rating about the pages you’re about to visit, automatically blocking harmful sites and ensure that you’re certain of your safety while browsing the world wide web. “Fast Scan” Abilities: SafeBytes’s virus scan engine is one of the fastest and most efficient within the industry. It's targeted scanning seriously increases the catch rate for viruses which is embedded in various computer files. Low CPU and Memory Usage: This program is not “heavy” on your computer’s resources, so you’ll not see any overall performance issues when SafeBytes is working in the background. 24/7 Customer Support: You can obtain totally free 24/7 technical support from their computer experts on any product queries or computer security concerns. Overall, SafeBytes Anti-Malware is a solid program as it has lots of features and could identify and remove any potential threats. Malware problems will become a thing of the past once you put this software to use. So if you’re searching for the best malware removal application out there, and if you don’t mind paying out some money for it, opt for SafeBytes Anti-Malware.

Technical Details and Manual Removal (Advanced Users)

If you don’t want to use malware removal software and prefer to get rid of Search Donkey manually, you could do so by going to the Windows Add/Remove Programs menu in the control panel and deleting the offending program; in cases of web browser plug-ins, you may remove it by visiting the browsers Add-on/Extension manager. You’ll probably also want to reset your internet browser. To ensure the complete removal, manually examine your hard disk and registry for all of the following and remove or reset the values accordingly. But bear in mind, editing the Windows registry can be a complicated job that only experienced users and professionals should attempt to fix it. Furthermore, some malware keeps replicating which makes it tough to eliminate. It is advised that you do the removal procedure in Windows Safe Mode.

Microsoft just released Windows 11 ISo file, based on the latest Insider Preview Build 22000.132. Inside build, you can try all-new features like clock updated app, snip tool, and everything releases so far via various patches. You can also use Windows 11 ISO file to do a clean install on your computer, but if you go with this option all of your existing files will be deleted. Microsoft says it added the ability to name your PC during the setup experience. You’ll also get to experience the Get Started app that’s designed to help you get going on your new Windows 11 PC (even if it’s not actually a new one).

Download ISO

• Go to the Windows Insider Downloads page. You will need to sign in with a Microsoft account registered with the Insider Program.
• Scroll down to Select Edition and select the build you want to download. You will most likely want the one at the top from the developer channel, as this is where Windows 11 should arrive first. So far, only Windows 10 builds are available. Click confirm.
• Select your preferred language. Not all languages ​​available for Windows are compatible with the Insider program, so you may have to stop depending on where you are from.
• Click the download button and the ISO file will start downloading.
• This is definitely an easier method, but unfortunately, it is not available yet. We will update this article once Windows Insider ISOs are available. Later, once Windows 11 64 bit is available to everyone, you can also download the stable build of Windows 11 iso. Microsoft offers the Media Creation Tool and Upgrade Assistant, which usually do just that. It will be some time before Windows 11 versions of the tools are available, as the operating system is only getting closer to this holiday.

As you know, installing Windows 10 is quite a complicated process in the background even though it may look like an easy task in the foreground. There are times when the setup is stuck on the “Hi there” screen where you won’t be able to input any information in the fields given and you wouldn’t be able to do anything else since the screen does not move ahead. There are a lot of possible reasons why this issue occurs. It could be due to a damaged setup image, invalid boot configuration, and many more. To resolve this problem, there are several options you can check out. You can try to get a new setup image or run the Automatic Repair or you could also try to recreate the Boot Configuration files or BCD. To get started in checking out these solutions, make sure to follow the instructions provided below.

Option 1 – Try to run the Automatic Repair Utility

You might also want to use Automatic Repair in fixing the error. To do so, follow the steps below.

• You can start by creating and booting from a bootable Windows 10 USB Stick.
• After that, click on Repair your computer located on the bottom left corner when you are on the initial Windows Startup screen.
• Next, click on Troubleshoot, and then on the other screen, click the Startup Repair option.
• Now select the operating system you want to repair. Once you do that, it will start to repair your operating system. Wait until the process is completed and then check if the problem’s now fixed.

Option 2 – Try to rebuild the BCD files

You can also try rebuilding the BCD files to resolve stuck screen issue in your Windows 10 computer.

• You can start by booting into the installation environment for Windows 10 from an installation media.
• After that, click on Repair your computer and on the blue screen, select Troubleshoot and then select the Advanced options menu.
• From there, select Command Prompt and once you open it, enter each one of the commands given below by sequence.
  • bootrec /FixMbr
  • bootrec /FixBoot
  • bootrec /ScanOS
  • bootrec /RebuildBcd
• Once you’re done executing the commands given above, type “exit” to close the Command Prompt window and then restart your computer and see if it fixed error code 0xc000014c.

Option 3 – Try recreating the Windows 10 installation USB

Recreating the Windows 10 installation USB might help in fixing the problem. You can use a USB drive to do so but make sure that it has a great read-write speed. Follow the steps below to recreate Windows 10 installation USB”

• 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 getting a new Windows image file

If none of the four given options above worked, you might want to get a newer installation image using the Windows Media Creation tool. After that, create the bootable USB drive and once completed and then try to run the Windows 10 setup again.

Both the DISKPART utility and the Disk Management are useful tools in Windows 10 that manage the disk space allocation, and so on. But these tools are not without errors as you could also encounter some when you run them. Recently, some users reported getting an error that says, “The selected disk is not a fixed MBR disk when trying to use the DISKPART utility”. Here’s the exact message of the error:

“The selected disk is not a fixed MBR disk. The ACTIVE command can only be used on fixed MBR disks.”

This kind of error only occurs when you try to activate a disk partition on a UEFI system partition. However, the command works only if your computer is based on BIOS/MBR. The UEFI method has no concept of the active partition and since you have a UEFI system, the disk type is GPT instead of MBR. To simply put it, your BIOS needs the MBR disk type while the UEFI needs the GPT disk type. To fix the “The selected disk is not a fixed MBR disk when trying to use the DISKPART utility” error, there are various potential fixes you can try. You might have to disable Secure Boot, convert the disk to MBR or fix the Boot Manager. For more instructions, follow the options provided below.

Option 1 – Disable the Secure Boot in the BIOS

Disabling the Secure Boot in the BIOS settings is definitely recommended to resolve the issue. To disable Secure Boot, here’s what you have to do:

• First, boot your computer into Windows 10.
• Next, go to Settings > Windows Update. From there, check if there is anything that you have to download and install if you see any available updates. Usually, OEMs send and update the list of trusted hardware, drivers, and operating systems for your computer.
• After that, go to the BIOS of your computer.
• Then go to Settings > Update & Security > Advanced Startup options. If you click on Restart Now, it will restart your computer and give you all the advanced options.
• Next, select Troubleshoot > Advanced Options. As you can see, this screen offers you further options including System restore, Startup repair, Go back to the previous version, Command Prompt, System Image Recovery, and UEFI Firmware Settings.
• Select the UEFI Firmware Settings which will take you to the BIOS.
• From there, go to the Security > Boot > Authentication tab where you should see Secure Boot. Note that every OEM has its own way of implementing the options so it varies.
• Next, set Secure Boot to Disabled and set Legacy Support to On or Enabled.
• Save the changes made and exit. Afterward, your computer will reboot.

Option 2 – Try converting the disk to MBR

You can try to change the File System of the drive from GPT to MBR but before you do so, make sure that you create a backup copy of your data to an external drive. Once you have that covered, follow the steps below.

• Create a bootable Windows 10 media and boot your computer from it.
• Next, click on the “Repair your computer” option on the first Windows 10 installation setup window.
• Afterward, select the operating system partition from the given options and click on Next.
• Now select Command Prompt within the System Recovery options box and execute this command to initiate the Diskpart utility: diskpart
• Then type either one of these commands to view the list of all the Disk connects or the partitions on those disks formed: list disk or list volume
• After that, execute another one of these commands depending on the command you previously entered to select the disk or partition you want to select: select disk # or select volume #
• Now execute this command to clean your drive: clean
• Finally, execute this last command to convert the selected disk or partition as MBR: Convert MBR
• Restart your computer and check if the error is fixed.

Option 3 – Try to fix the Boot Manager

• You can start by booting into the installation environment for Windows 10 from an installation media.
• After that, click on Repair your computer and on the blue screen, select Troubleshoot and then select the Advanced options menu.
• From there, select Command Prompt and once you open it, enter each one of the commands given below by sequence.
  • bootrec /FixMbr
  • bootrec /FixBoot
  • bootrec /RebuildBcd
• Once you’re done executing the commands given above, type “exit” to close the Command Prompt window and then restart your computer and see if it fixed error code 0xc000014c.

Fatal Error c000021a - What is it?

Fatal Error c000021a is a type of Windows stop error also known as the blue screen of death (BSoD) error. When this error occurs, it causes the computer screen to go blue and locks the user out of the current activity. This error code is fatal and can lead to serious issues like system crashes and freeze. The error code is usually displayed in the following format:

STOP: c000021a {Fatal System Error} The Windows Logon Process system process terminated unexpectedly with a status of 0xc0000034 (0x00000000 0x0000000)

Solution

Error Causes

Fatal Error c000021a occurs when the Windows kernel detects that either Winlogon.exe or Csrss.exe service processes have stopped responding or failed to load.  When this happens the error code pops up on the screen. Nonetheless, this is not the only reason for the occurrence of this error. There are plenty more reasons why Fatal Error c000021a may pop on your computer screen. These include:

• Missing or corrupt hardware drivers
• Faulty hardware
• Windows System Restore failed during the rollback process
• Malware or viral infection
• Registry issues

No matter what the reason may be, it is advisable to fix the error right away without any delays. Remember it is a fatal error and can cause a great deal of damage to your PC.

Further Information and Manual Repair

Fatal Error c000021a is a serious PC issue but this does not mean you have to hire an expert to get it fixed. The good news is that this error is actually quite easy to resolve. You don’t have to be a technical whiz or a computer programmer to fix Fatal Error c000021a on your PC. Here are some do it yourself methods to fix this error code right away without any hassle: Let’s get started:

Method 1: Update Your PC Drivers

As we mentioned about corrupt or missing drivers can be one of the many reasons for the occurrence of this error. So, check the drivers first. Perform a driver scan and make sure all your drivers are updated.

Method 2: Perform a Windows System Restore

To do this, first launch Task Manager by pressing CTRL+SHIFT+ESC on your keyboard. Now click on the application tab and then click ‘New Task’ then browse. After that, go to C:\Windows\System32\Restore  folder and then double click the rstrui.exe file. This will help start system restoration. Your computer will reboot during the process and hopefully, the error will be resolved. Nonetheless, if the error still persists then try methods 3 and 4.

Method 3: Scan for Viruses

Sometimes Fatal Error c000021a may also occur due to malware infection. Your PC may be affected by viruses hidden in different locations without you knowing about it. Therefore to resolve this error, it is recommended to run an antivirus and scan for viruses. If detected, remove them right away to fix the error code.

Method 4: Repair the Registry

Another method to resolve Fatal Error c000021a code on your system is to repair the registry. The registry stores all the information and activities performed on the system. If it is not cleaned frequently, it gets loaded with too many files unnecessary and obsolete files like the junk files, cookies, internet history and temporary files which corrupts and damages the registry thereby generating blue screen of death error codes like Fatal Error c000021a. Though you can repair the registry manually it can be both time-consuming and slightly difficult especially if you are not a computer programmer. Therefore it is advisable to download a registry cleaner to fix it right away.

Automatic Repair with Restoro.

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The speed at which the CPU runs varies depending on any Windows laptop or desktop. And in case you don’t know, the CPU does not run at full speed all the time as it depends on how the operating system distributes the load so it works accordingly. However, there are instances when it runs at full speed especially if your Windows 10 computer is on a heavy workload. But if you find that even when your computer is already on a heavy workload and the CPU is still not running at full speed, then you need to look into this situation. To verify that your CPU’s speed, you can use any CPU stress test tool. This kind of issue is common on laptops compared to desktop computers since laptop runs on battery. The Intel Processor on laptops uses the Speed Stepping Technology which means that when you are doing some small tasks on your laptop, the processor’s speed is reduced. On the other hand, if this happens when you are using a heavy application, it can be due to a low charge on the laptop’s battery. Thus, Windows will try its best to keep the computer running for as long as possible by reducing the CPU speed or processor. But there are times when you are ready to sacrifice battery to make sure that the work gets done on time. To achieve that, here are some options you can check out.

Option 1 – Try setting the processor state to the maximum in Power Options

• Type “control” in the search box to view the classic Control Panel as well as the popular options.
• Next, click on Power Options > Change plan settings > Change advanced power settings.
• Then navigate to Processor power management > Maximum processor state.
• Now select 100% when it is on Battery and Plugged in.
• After that, expand the System cooling policy option and make sure to set it as Active to make sure that the battery won’t overheat.
• Finally, apply the changes made to all the profiles of the power management and restart your computer. This will ensure that your CPU will run at maximum power at all times.

Option 2 – Try to update or disable the Intel Power Management driver

The next option you can try is to update or disable the Intel Power Management driver. The Intel-powered computers have dedicated software that controls CPU speed and Fan speed when it needs to save battery. You can try disabling it temporarily and check if there are any changes with the CPU fan speed.

• First, restart your computer by holding the Shift key to boot your computer into Troubleshooting or Advanced mode.
• Next, go to Troubleshoot > Advanced Options > Command Prompt.
• Then change the directory to C:/Windows/System32/driver and then rename the file named “Intelppm” by entering the “ren intelppm.sys intelppm.sys.bak”.
• Now restart your computer.

Note: If you were not able to find the drivers in C:/Windows/System32/driver, check if they are available under C:/Drivers/IntelPPM. After that, the CPU speed should change now with the Intel driver missing from the system. And in case you want to enable it, simply follow the same steps given above and rename the file again.

Option 3 – Try disabling the IPPM using the Command Line or Registry Editor

• Command Prompt:
  • Tap the Win + R keys to open the Run dialog box and type “cmd” and tap Enter to open Command Prompt.
  • Next, type this command and hit Enter: sc config intelppm start= disabled
  • The “sc config” command you entered modifies the value of a service’s entries in the registry as well as in the Service Control Manager database.
• Registry Editor:
  • Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and hit Enter to open the Registry Editor.
  • Next, navigate to HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesintelppm.
  • From there, double click on the intelppm and change the Start key value to
  • Now close the Registry Editor and reboot your computer.

Note: The steps given will make sure that the CPU will run at maximum power at all times.

Receiving a screen of death is not a pleasant experience at all and most users would agree that they would very much like not to face one during their work with the computer. Sadly PC is not a perfect machine and it is not working in a perfect environment so errors happen. The most famous and well-known death screen is blue which is also the most common one, my bet would be that there is not a user which has not been faced with this blue error screen. There is no simple explanation why these stop errors occur as several factors can be involved. However, it is known that the malfunctioning of hardware drivers or drivers that are installed by third-party software drive this unwanted change. But did you know that there is more colors for infamous death screens and not just blue one? Microsoft has coded different errors to different colors in the goal for the technical team to be aware right away of what type and kind of error they are dealing with. Color for screen errors are: Blue, Black, Pink, Brown, Yellow, Red, Orange, Green and White If you are interested in what color represents what keep reading.

BLUE

A stop error or exception error commonly called the blue screen of death (BSoD) or blue screen, is an error screen displayed on Windows computers following a fatal system error. It indicates a system crash, in which the operating system has reached a condition where it can no longer operate safely. This is caused by many different problems, such as a general hardware failure or a crucial process terminating unexpectedly.

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BLACK

On Windows 10 systems, a Black Screen of Death can be caused by an unfinished Windows Update. To resolve this problem, simply hold the power button down on your PC or laptop to switch off the computer. A cold start should result in the system booting properly.

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PINK

It is a diagnostic screen with a white type on a pink background. Pink Screen is mainly seen when the VMkernel of an ESX/ESXi host experiences a critical error, becomes inoperative, and terminates any virtual machines that are running. It is not fatal and generally considered more of a developer testing issue. When encountered, it can be fixed quickly by following the simple action of pressing and holding your computer’s power button to shut down the device.

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BROWN

The Microsoft Windows 10 Operating System Brown Screen of Death is an on-screen fatal error notification with bug check codes which is seen when a computer crashes due to graphics hardware or software-related problems (failing graphics drivers).

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YELLOW

It affects the functioning of a browser, particularly Mozilla Firefox. The Yellow Screen of Death makes the appearance with a weird buzzing sound in the background when the XML parser refuses to process an XML document causing a parsing error and a weird buzzing sound. The issue persists unless the computer is manually rebooted.

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RED

Commonly the Windows 10 red screen is caused due to the hardware error, particularly if you overclock your Windows PC/laptop. Despite this, sometimes the red screen of death is also caused by outdated or incompatible drivers or due to BIOS issues.

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ORANGE

The Orange Screen of Death on Windows occurs due to fatal hardware errors. Multiple reasons have been reported for the Orange Screen of Death. Some had this issue when watching a YouTube video, some were not able to boot into Windows. It can even occur when waking up from Sleep.

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GREEN

The green screen of death only appears when you're running an Insider Preview version of Windows 10. It's the same as the blue screen of death, and it will show the same error messages. ... If you see a green screen of death (GSOD) on your PC, that's a sign you're using an Insider Preview build of Windows 10.

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WHITE

The White Screen on Windows is also an error where the screen of the computer just turns white and freezes. There can be several things that can cause the white screen to appear on the Windows laptop monitor. But the main issue could be because of malfunctioning of the graphics hardware.