Argh!
Is that an addon Video Card?
Do you have onboard Video too?
If so remove the Addon Video card (one screw, then there may be a clip, or push clip thingy at the end of the card)
Then plug the Monitor in the onboard Video connection
Now just back to the blank windows screen
Ok so lets refresh
New HardDrive
Put Windows CD in
Boot Up
System Freeze, or it can't find disk message
Tried Reset CMOS?
Tried Cabling. (Replace?)
Actually what else, because this thread is big
Well that looks more and more like a CPU fault