Graphic Glitch then PC freeze

[xIHexIx 0]

So I've recently been getting weird graphic glitches that lead to my PC freezing. It's happened multiple times before, occuring in different methods from this one, but this is what happened just a moment go: I was playing for about an hour earlier, stopped moving for a minute to check something on my phone. All of a sudden my main screen went black, and my secondary turned a greenish color and had vertical lines run down it, like the no signal screen from older TVs.

My graphics were modified using this guide: https://docs.google....tDYyxj6Gmc/edit and I can post my PC specs if you guys think it that may be the issue. My gpu drivers are up to date though, I checked that already.

Thanks everybody!