Hello Ewa Nowakowska,
Welcome to the Microsoft community!
I understand your frustration with particular keys on your keyboard.
I noticed that you tried a lot of things, reinstalling the keyboard, trying to update keyboard drivers, troubleshooting, checking for Windows updates. Even tried the sfc scannow and DISM commands, which were perfectly correct for solving the keyboard problem.
Here are some possible causes and troubleshooting steps:
- Try creating an account to see if this problem occurs. If not, the user configuration is OK.
Create a local user or administrator account in Windows - supported by Microsoft
If a new account is also experiencing this issue, you can refer to the following link to fix your user profile:
Repair corrupted user profiles in Windows - supported by Microsoft
- I noticed that you haven't tried clean boot yet, first, let me explain to you that clean boot does not damage the user's files, it helps the user start Windows by launching a minimum of drivers and startup assemblies to determine if the background program interferes with the program.
Therefore, I think there may be third-party applications on your computer that interfere with the keyboard mapping, if so, uninstall them first, as this could be the cause of the keyboard mess.
- If you try it after understanding the reasons for a clean boot, here is a link to the official steps for a clean boot:
How to Perform a clean boot in Windows - Microsoft Support
- Considering that you are not willing to try a clean boot operation, can you consider putting your computer in safe mode?
The working principle of the safe mode is to start the computer without loading the third-party device driver, thus eliminating the interference of the third-party application, enter the safe mode and try again to delete the folder normally, the specific steps refer to the following link:
Boot your computer in safe mode in Windows - Supported by Microsoft
- If it is not related to third-party applications, then I will consider system and hardware reasons, if it is system reasons, you can refer to the following link for Windows 10 ISO file repair.
How to: Perform a Repair Upgrade with Windows 11 or Windows 10 - Microsoft Community
- If you are not willing to try this solution, then for hardware testing reasons, you may want to consider sending your device to the aftermarket.
If you have problems with the operation, please reply below and I will try to help you.
Best Regarts ,
Morning | Microsoft Technical Support Community