No display

restart your computer in safe mode by pressing F8 repeatedly as you turn on the computer . then you can make your changes .. finish it then shutdown and start again normally .

good luck

Heres what you do. Completely unplug that machine form the power source and pull out the BIOS battery. Looks like a watch battery on the system board. Nice and shiney, cant miss it.

Wait about a minute or 2 and put it back in, connect power and power on and it should work.

This resets the BIOS to factory defaults and it should detect whatver video option you have ( i.e onboard or video card. )

If you plan to use your PCI Video card then you should be able to set it in the bios to boot that first.

Let me know, good luck.