My video card stops working when I play games.

[cookiesofamerica]

Okay, so when I play GMOD, ARma 2, (any game) With my video card  it breaks down into a black screen and doesn't work. I can't even play two videos or it'll crash and recover. I updated my drivers but nothing works, does this means it's broken? Is it not getting enough power?

Also my GPU fan is very loud for some reason, guessing it's not consuming enough power?

[BltElite]

Have you checked cables are plugged in properly etc?

[smt]

Which GPU is it and what PSU (including watts) do you have? Also OS and RAM etc etc

[cookiesofamerica]

(Solved) I overclocked it to high, as it was unneeded, fixed by lowering the settings.