My younger brother has a P4 and he wanted a new GPU. His old gpu was Nvidia fx5500. So today he bought a powercolour 3650. Now, I uninstalled the Nvidia drivers and let the pc reboot. I downloaded the ATi drivers with the 5500 still in. It was not recognised, so it meant the Nvidia drivers are gone. I installed the ati drivers then rebooted the computer. I shut it down again took out the old card, installed the new card. The PC fully powered on with the gpu fan spinning. Though nothing appeared on the screen. It was just blank, the screen button was flashing as if it was off. YES the dvi connector was connected. Any feedback would help alot! Thanks I just looked at the ATi drivers, something happened while installing and it says failed to open windows,32atixxx etc. So im going to uninstall ALL drivers and retry. Another thing, it WILL boot with the 5500 and it is not recognised, though with the other card nothing, just nothing.