If it's a blue screen than thats bad

Just back up all the important things on ur computer to like a usb or external HDD
than simply reboot pressing ALT F10 on boot, than restore the computer to factory settings. :y:
This will delete any virus,malware,junk,corrupted files,and virtually everything except windows and that.:y:
It's as if you bought the computer Brand new and it will be faster too .

Ight peace hope I helped