Critical alert—screen is black.
Critical alert—screen is black.
This seems confusing. It doesn't seem to address your main issue with the random crashes. I understand you're struggling with registry issues, but this doesn't directly help with them. Microsoft advises against altering certain registry values. After making changes, your system will restart. The positive side is that unless you did anything suspicious, no files were downloaded or installed. Your data appears safe. If Windows can't resolve the problem on its own, consider using another computer to generate a fresh Windows 10/11 installation media via USB. You can download it from the official sources provided.
Reinstalling Windows means you'll erase any files not saved elsewhere, such as on a separate USB stick.
Remove the disk and link it to another machine using a SATA-USB connection. Make sure to back up all important data before proceeding. For a standard 4-inch disk, use a box or connector rated for 12 volts. If it's a 2 1/2-inch drive, a SATA-USB cable should suffice. Consider replacing the disk with a new one in your computer (desktop or laptop) and set up either Windows or Linux. Then examine the removed disk to find the necessary files.
You're unable to open CMD after selecting the safe option, but you might be able to enter Blue Screen Recovery. Try pressing the appropriate key (often F12 or Esc) during startup to access that mode.