Hi guys. I have an HP Pavilion HPE h8-1256s desktop. All is standard as you find on HPs website except I have a Corsair 600 Watt PSU (cannot remember exact model but I know it has big orange letters that say 600 B on the side). So here's the trouble. I was running a geforce 550ti 1GB card and I just bought a Geforce 750TI 2GB card (model is ASUS GTX750Ti-OC). When I put the 750ti in and turned it on (yes I plugged in the 6 pin power molex) it just shows the HP splash screen (where the POST screen normally is). It just hung there for about a minute. All the while I was pressing F2 and my delete keys alternatively to boot into my BIOS but it wasn't responding. Nothing. Zilch. After about 2 minutes, the computer made one beep noise and then rebooted. Also, I should mention that only one of the 2 fans on the graphics card was spinning. I can spin the other fan freely so I know nothing is blocking it. Is it possible that I just don't have enough power or a motherboard that can't support this card??