I have a T500 and I recently upgraded to Win7. Evrething was fine until I tried to install the drivers for the graphic cards and went on in BIOS and selected to use the integrated graphic card option. After reboot everything turns on except for the display. The fan works, everything looks OK but the screed does not display anything. I even tried to boot directly from the Win7 disk and install a fresh copy (maybe it would have been a better idea to do that in the first place) but it's the same, nothing happens. I don't know what else to try.