In this post, we will show you how to fix Diagnosing your PC, Your PC couldn’t start correctly, Error Code 0xc000021a or 0xc0000001 on Windows 11 or Windows 10 computer. It could occur due to various reasons, including a faulty driver/software, corruption in Boot Configuration Data file, etc. You can fix all the solutions here in this article.
Your PC couldn’t start correctly
A required device isn’t connected or can’t be accessed
Error code: 0xc0000001/0xc000021a
When it appears, it asks you to press Enter to try again to log in or F8 to find an alternate boot option. You should try pressing the Enter button because the solution is much easier when you can sign in to your system. Next, press F8 and see if that helps. However, if you cannot log in to your computer, you can try the following suggestions.
Before getting started with these solutions, it is recommended to unplug all the unnecessary external devices such as external hard drive, pen drive, printer, Bluetooth devices, etc.
NOTE: You’ll need to use the recovery tools on your installation media. if you don’t have any installation media. To carry out some of these suggestions, you will have to boot Windows in Safe Mode, boot into the Advanced Startup Options screen, or use the Installation Media to boot or repair the OS.
Your PC couldn’t start correctly, Error 0xc0000001 or 0xc000021a
To fix Error 0xc000021a or 0xc0000001, Diagnosing your PC, Your PC couldn’t start correctly on Windows 11/10 computer. follow these suggestions:
- Run Startup Repair
- Repair and rebuild BCD
- Uninstall recently installed driver, update or software
- Run DISM Offline
- Use System Restore point
- Repair your computer using Installation Media.
To learn more about these steps, continue reading.
1] Run Startup Repair
It is the first thing you need to do when you get the aforementioned error. It helps when you cannot log into your system and get such errors continuously. It runs several things in the background and fix your startup problem immediately. However, you can find this tool in the Advanced Recovery Mode.
Here you need to go to Troubleshoot > Advanced options > Startup Repair.
Once done, you won’t get the error anymore.
2] Repair and rebuild BCD file
You need to use the bcdboot and bootrec commands to repair and rebuild the Boot Configuration Data file on your computer.
It is quite tricky, and that is why it is recommended to follow this tutorial to know how you can repair and rebuild Boot Configuration Data file.
This post will help you if you see Total identified Windows installations: 0 message.
3] Uninstall recently installed driver, update or software
As mentioned earlier, this problem could occur due to a faulty driver, software, etc. If the same thing happens with you, you can fix the issue by uninstalling that driver or program. See if that helps.
Related: Fix c000021A Fatal System Error on Windows.
4] Run DISM Offline
You can run DISM Offline to repair Windows 11/10 System Image backup and see if that helps. If your Windows image is unserviceable, the DISM (Deployment Imaging and Servicing Management) tool can help you fix the issue.
This post will help you if you see DISM Errors 87, 112, 11, 50, 2, 3, 87,1726, 1392, 1393, 1910, etc.
5] Use System Restore point
The next thing you can try to fix the issue. If you created a System Restore point earlier, it is time to use that. If the changes are irreplaceable, you can make use of the System Restore point.
6] Repair your computer using Installation Media
You may also use your using Installation Media to repair your Windows OS.
Related: Fix c000021A Fatal System Error
How do you fix your PC if it says your PC did not start correctly?
To fix Your PC didn’t start correctly error, you need to follow the aforementioned solutions. For instance, you need to use the System File Checker, DISM tool, rebuild Boot Configuration Data file, etc. All the steps are mentioned above, and you need to follow the solutions one after one.
Why does my PC keep saying your PC did not start correctly?
Your computer is saying Your PC didn’t start correctly because there are some issues with the system files. In order to fix the issue, you need to go through the aforementioned solutions. Whether you get the error on Windows 11 or Windows 10, the solutions are the same.
Hope this guide helped.