Okey guys so i have one huge problem. I got m2n—mx motherboard which ran 7300le before but it died so i decided to buy cheap alternative and i also changed my psu from 350W to 500W i got 640gt i know for a fact that this psu is more than capable of running this gpu so yeah i connected this new gpu fan spins everything works but no display then i tried connecting to integrated gpu it also didnt work then i reset my bios with jumper integrated gpu started working i changed priority in bios so it prioritizes integrated gpu ten it booted with new gpu i changed drivers etc and it recognized gt 640 but if i connect cable to gt 640 it doesnt open any files only show blank windows i can open start menu windows 8.1 btw but even if windows are open it wont open and i cant flash bios usb booting doesnt work and alt +f2 doesnt find cd that i put in any help would be awesome