Help my graphics card

[Fr0st1718]

So what happen was I ran my new graphics card and install drivers and it worked for 30 mins right. And then I ran a game and it unexpected shut off. It was black screen and I tried to turn them back on but it doesn't work so I open my pc and took out the Gpu and now it works, I don't know the problem is it the Gpu or and if it is I returned the Gpu and I'm getting a new one right. I want to know if it's the Gpu or psu or motherboard. My graphics card is evga gtx 950 sc+ and psu is evga 500w and motherboard is some kind of hp thing because it's an prebuilt pc for Costco. When I get my Gpu I'm checking if my motherboard is a problem by if it doesn't work again or if the psu isn't enough, and I don't want to have the same problem so any ideas before the Gpu breaks again.

[Fr0st1718]

I do remember having cam and Temps were like 40 to 50 or something playing csgo and idle is 30 what should I do just to be safe and not fuck it up again