Need to solve a puzzle.

[trigggl]

Nope, not the memory from you. If the memory was bad, wouldn't I get a beep code? I checked Dell's beep code list and they don't list anything for no beep.

One way to diagnose a problem is to reduce it to its simplest configuration and then work your way up. Have you tried booting it without a video card?

Have you tried starting it up without the hard drive connected? I've had a hard drive keep a system from booting before. It didn't matter that it wasn't the one that it was booting from.

Pull everything from it except the minimum required to boot.