League caused my cpu to have a seizure.

So I got on League, played a game, lost, then went to play another one. Cpu was perfectly fine until, as it started, everyone started spamming their emotes, so I did too, and as I was doing that the client starting bugging out and my screen did a bunch of random glitch screens for a second and went back to normal. I instantly tabbed out to see if it was my cpu, but everything was fine. Went back in to play game, was playing fine. My 1st recall back to base and it did it again, but instead I couldn't tab out. It stopped on a black gridded blue screen. I reset my cpu, it started up normally. Opened league, still good. Got into the game, bought items and right as I exited the shop to go back into lane it did it again, except not blue but a greyish black grid screen instead.

I tried to reset my cpu again, but now everytime I get to my cpu login screen it it glitches out. And now, I have no idea what happened with my cpu, but it happened because of League from what I can tell, the more I recall it might have something to do with the fountain. It might be my graphic card or something, but my cpu wasn't that hot idk. If this is the new clients fault I just dont want this to happen to someone else.

Any ideas???