How to Resolve 0xc00021a BSOD Error in Windows 10

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Every new update from Microsoft for Windows 10 creates problems for computer users. Every update comes with new bugs and it always hurts computers. Similarly, this stop code 0xc00021a is also an error in Windows 10 operating system. It is a blue screen error that occurs when the system crashes after updating or reinstalling the operating system.

This Windows 10 0xc00021a shutdown code means that “your computer has encountered a problem and needs to reboot”. This error is displayed every time you reboot your computer. However, you cannot reboot your computer because the operating system is frozen.

What causes the 0xc00021a BSOD error in Windows 10?

In most cases, this error is caused by a misconfigured application or driver. Improper operation of the underlying software leads to fatal consequences.

Another common cause of 0xc00021a error is registry corruption. This can occur as a result of electric shock, hard drive read/write errors, etc.

How to fix the 0xc00021a BSOD error in Windows 10?

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Start Windows 10 in safe mode with networking

  1. Interrupt the boot sequence three times in a row to start Windows troubleshooting.
  2. Select Troubleshooting -> Advanced -> Startup Options.
  3. Click Restart and wait a few seconds.
  4. Press F5 to turn on safe mode with networking.

Launch Windows 10 cleanly

  1. Start Windows 10 in safe mode.
  2. Press Win + R, type MSConfig and press Enter to open the System Configuration application.
  3. Select the General tab.
  4. Select Selective startup.
  5. Clear the Load system services and Load startup items check boxes.
  6. Click Apply.
  7. Switch to the Automatic Startup tab.
  8. Click Open Task Manager.
  9. Select an application with an Enabled status and click Disable. Do the same for all activated applications.
  10. Restart your computer.

Recovering corrupted system files

  1. In the Troubleshooting menu, go to Troubleshooting -> Advanced -> Command Prompt.
  2. Select your PC account and enter your password to continue.
  3. Run sfc /scannow and wait.
  4. You may need to insert the Windows 10 installation media to restore the system files.

Updating old drivers

  1. Start Windows 10 in Safe Mode with a network connection.
  2. After the system boots, right-click the Start button and select Device Manager.
  3. Double-click the device to view its properties.
  4. Click on the Drivers tab and check the date of the driver.
  5. If it is more than one year old, check for updates by clicking Update Driver.
  6. Click Automatically check for drivers. Do this for all outdated drivers.

Uninstalling third-party apps

  1. Start Windows 10 in safe mode.
  2. Right-click the Start button and go to Applications and Features.
  3. Set Sort by installation date to display the most recent apps first.
  4. Select the first app in the list, click Uninstall, and confirm again.
  5. Do this for all recently installed programs.
  6. Now try to start the operating system normally.



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Frequently Asked Questions

  1. Start your system.
  2. Go to your desktop and click the Start button.
  3. Press the and R keys to open the Run utility.
  4. Type MSConfig.
  5. Press the Enter key.
  6. In the System Configuration window, click the General tab.
  7. Click Selective Run.
  8. Uncheck the Load boot items checkbox.

  1. Open Settings.
  2. Click on Applications.
  3. Click on Applications and features.
  4. Select the application causing the blue screen of death and click Uninstall.
  5. Tap the Uninstall button again.
  6. Continue to follow the instructions on the screen.

  1. From the Troubleshooting menu, go to Troubleshooting > Advanced > Command Prompt.
  2. Select your PC account and enter your password to continue.
  3. Run sfc /scannow and wait.
  4. You may need to insert the Windows 10 installation media to restore the system files.

Related posts:
  1. How to Troubleshoot Error Code 0xc000021a on Windows PC
  2. How to Resolve: BAD_SYSTEM_CONFIG_INFO (BSOD) in Windows 10 PC
  3. How to Resolve: CLOCK_WATCHDOG_TIMEOUT BSOD in Windows PC
  4. How to Repair the IO1 Initialization Failed BSOD in Windows 10
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