So I just upgraded to an AMD Sapphire 270x graphics card. However since installing it my computer reboots shortly after booting into windows (and sometimes even before that) with not apparent cause. Any ideas what could be the cause?
Other components:
Motherboard: MK Gigabyte GA-P55-UD3
CPU: Core i5 750, 2.66GHz 8MB
PSU: Corsair VX 550w
RAM: Corsair 2x2gb DDR3 1600MHz/CL9/1,65V./XMS3
Edit: I should say that I checked the temperature on the card, the voltages from the PSU as well as did a clean sweep of the old drivers, all off which looked fine/gave no result. The +12V were around 1V using HWMonitor though it was fine in BIOS so that was likely just a measuring error.
Other components:
Motherboard: MK Gigabyte GA-P55-UD3
CPU: Core i5 750, 2.66GHz 8MB
PSU: Corsair VX 550w
RAM: Corsair 2x2gb DDR3 1600MHz/CL9/1,65V./XMS3
Edit: I should say that I checked the temperature on the card, the voltages from the PSU as well as did a clean sweep of the old drivers, all off which looked fine/gave no result. The +12V were around 1V using HWMonitor though it was fine in BIOS so that was likely just a measuring error.