Hello wamzi
Looks like your PC is either infected with a virus or any system files are corrupted.
You can start with:
> Scanning your computer with an efficient antivirus program such as Kaspersky, Malwarebytes, Avast, etc.
> If the issue persists, try
Running the SFC /SCANNOW Command to see if problem is resolved.
If even the SFC command fails, try
Restoring Windows to an Earlier Restore Point, i.e. when everything worked fine.
Hope this helps.
Cheers!!