Originally posted by BurtE
Just tried GTA and it crashed within a couple mins
Try downloading MSI Afterburner or something that can monitor your GPU. That way you can see if your GPU is being utilised at all. If it is being utilised, you can potentially see what's causing the error.
Some things I'd check: Make sure you've set your motherboard to use your GPU and not on board graphics. Make sure all power cables are plugged into the GPU correctly. Make sure the GPU is seated into the socket.