Gtx 760 not working

I just bought a gtx 760 and installed it into my computer and it will run games on low settings no problum but if I put them on high I can play for a short time then my computer just shuts off I am thinking it is my power supply but im not sure please help!

first check to see if your power supply matches what the video card says you should have. then if they match you should check if your pci x 16 slot works

 

It says my power supply and graphics card should be compatible and my pci slot worked on my older amd graphics card

If you get no BSOD then your psu doesn't have enough juice.

alright thats what i figured thanks for the help

Did you install the drivers?