I've cleared the CMOS both by unplugging the PC and pulling the battery for 15 minutes and shorting the jumper. The computer still won't boot from the Windows install CD and of course the monitor still will not respond. From the sound of the hard drive the computer seems to be booting normally but there is no video output.
Just to clarify, I get no video at all. No "Dell" splash screen, no plain dos looking opportunity to enter BIOS. The monitor never wakes from sleep mode.