I bought a used GTX 770 (the highest my motherboard supports) to upgrade my graphics so hopefully Tower and Fallout 4 would run better, but now I find I can’t play either of them with a multitasking mindset as I normally do or else my computer crashes. The people who sold me the thing aren’t replying to my messages asking for help. Anybody here who can help me out? See this post for more details:

I think it’s the 770,as i have been running 660 on turbo and it still runs.

Yeah, the problem’s definitely with the card, but I want to fix the problem as the 660 isn’t delivering the performance I want.