At each cold start, the screen remains blank. Only after two restarts or resets, screen comes up and everything works correctly.?
Have put in another videocard (GF2) and then monitor display came up at first try. Then tried my videocard (GF4Ti4200) in another PC and worked properly as well. Connected my PC to another monitor, also no input signal. Tried out several video drivers, all with the same result.

My configuration: Windows XP, Intel P4 2.4, Abit It7-max2 v2, 512mb ddr sdram, 2 Maxtor DiamondMaxPlus9 60gb (raid 0), SBlive player5.1, LG cdrw GCE8520b, Aopen dvd1040pro, coolermaster cooldrive4, Copperjet 800 usb modem, HP deskjet 970cxi, HP scanner 5200c.

Can someone come up with a solution to this problem? :-/
Thanks.

I used to have similar problems with my computer and I put a new power supply in it and it fixed the problem perfectly.

Darth's problem was the 'power good' line.
Unfortunately, this problem can have many causes.
Before replacing anything, reseat ALL cards, connectors and memory modules.
And the processor if you know how to handle it.