I had this same problem with AVG on my parents' PC some time ago: it deleted an essential system file, making the computer unable to boot even in safe mode. I t

I had this same problem with AVG on my parents' PC some time ago: it deleted an essential system file, making the computer unable to boot even in safe mode. I then did what they said that I should do, thereby fucking Windows up completely. Luckily I was able to recover important files via Ubuntu.