Driver card problems "what have i to do?

Sistem: W7 x64 8gbram "Amd radeon HD 7700 series"

problem: after some time of pass in a some maps my computer crash and after some seconds
w7 tell me "the Amd videocard was stoped but it is now up" and PoE logout "unspected error"


It can pass after 20 min or "Always i enter in special map" i cant play this map for more of 20 seconds.

Your video card is crashing, so maybe it has to do with overheating, or with not enough power from the power supply (PSU). If you can, monitor the temperature levels from the video driver software, or use a third-party thermal monitor.