Video Card Not Responding

I have an WinXP with a P4 processor and when I turn the computer on it looks and sounds as everything is normal but I get no video.

Things I have tried:

Removing all PCI devices
Removed power from cd-rom, dvd-rom
Tried a different video card
Removing all peripherals ie. mouse, keyboar
* I tried another power supply but I don't think it was compatible with the computer in question.

Please Help!
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It sounds like its your monitor.  Unplug the signal cable:  you should get a "no signal" message?  Check the plug at the back of the monitor.  Does the monitor light remain orange or turn green on power up?

Also try unpluggng the monitor for a few minutes in case it got confused.
Try the monitor on a working system to be sure it works.
Have you tried checking your BIOS settings?  Once you hear the 'beep', press the appropriate key (sometimes DEL, F10, F2, Esc) and see if you can make any video modificaitons there.
What type of system is it? (system board/BIOS)?
AtsuTechAuthor Commented:
I tried 2 monitors and the monitors are not getting a signal from the computer.
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Try checking the ram, ( different ram in this system or this ram in another one ) then the CPU ( same as ram ). If both are good, then it is probably a mobo problem.
That's pretty bizarre alright.
What is are the video cards & mobo in question
Has this configuration ever worked?  What's changed?
use a different power cable leading to the monitor and that other cable thing with 15 pins......change.

I had a problem similar to this on a client's PC.  I would power up the system and get what sounded like the appropriate beep confirming everything was a 'go', but no video.  Upon further inspection, I discovered that the AMD 2700 he had recently installed had a cracked core (it wasn't properly shimmed).
Once that was replaced, the system booted fine. . .

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AtsuTechAuthor Commented:
I replaced the processor and it work fine..........thanks for the help Sir!
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