I've tried to narrow down any potential issues, and it seems like this issue rests with the graphics card.
While my brother is playing games, his screen goes black, and the audio gets stuck in about a 2-second audio loop. Only thing you can do is hold the power button. I've had it on onboard graphics without issue.
I've tried rolling drivers back, updating them, everything. So far, nothing has worked.
PasteBin of event viewer (Issue occurred at 13:50)
http://mibpaste.com/ml3TgcAny thoughts? I worry the card might be going.