Whole computer screen goes to black when I open/create a new file

I'm very worried and, honestly, about to have a panic attack. My computer caught a virus recently, so it had to be formatted. I got it back and I already installed all the software I had before, including the Adobe ones I had (CC 2017). All of them work right, EXCEPT for Illustrator.

When I open it, it seems fine. Problem arises when I try to create a new file or try to open an already existing one. When I'm creating a new file I put in the width/height and other stuff, and as soon as I click to create the file, the entire screen of my computer goes black, the mouse flashes non-stop, and it doesn't stop until I find a way to forcefully close Illustrator. Same thing happens when I try to open .ai files of mine from before.

I tried reinstalling it various times, and also tried installing the CC 2015 version. Same thing.

I'm a graphic design student, so I really depend on Illustrator for pretty much everything. I don't know what to do and I can't find anyone else with a similar problem anywhere. Please, help.