I bought a new gpu: nvidia geforce gtx 980ti. I went to test it, i put it in and started my computer completely fine. I downloaded the drivers. I could use google and other apps like spotify fine, but then I opened a game and less than 5 minutes in my computer shut off. I tried this multiple times. Then I tried to put my old nvidia geforce gtx 550ti in and it was running normally. Ive tried asking multiple people for help but nothing worked. If anyone can help, thanks.