Hi.I am having a problem with my gpu. I recently put together new pc but kept my old gpu.It is Sapphire HD 4650. It was working perfectly on old system,but now it just rots in there with almost no life signs. Thing is: 1. Fan is spinning for about a second on system startup and shutdown.Then it stops and that's it. 2.Card by itself is pretty hot,so I assume pci-e port is not broken.(?) 3.Tried changing card from internal to pci-e in bios.No good. 4.It does not show up anywhere,not in cpu-z,not everest nowhere at all. What could be the problem? Would appreciate any help or advice. My specs: Athlon II x3 450 2gb ram MSI 760gm-e51(fx) 400w codegen psu 250gb sg barracuda Windows 8.