Asus P5B Deluxe won't display video anymore

[buckdog05]

I have tried using different video cards and I have also tried moving the ram to different slots (DDR2).

One strange thing is that the computer also does not seem to be going through the normal boot process, as I can't hear it "thinking," and the lights on my PS/2 keyboard won't come on (although my PS/2 Optical Mouse does light up)

When I turn it on, however, all of the lights and fans come on and the CD drive opens like usual.

Any thoughts, or is the motherboard shot?

Thanks!

[jcarle]

Sounds more like a dead power supply to me.

[puntoMX]

One strange thing is that the computer also does not seem to be going through the normal boot process, as I can't hear it "thinking," and the lights on my PS/2 keyboard won't come on (although my PS/2 Optical Mouse does light up)

That "thinking" sound must be a high pitching sound, so I agree with:

Sounds more like a dead power supply to me.

"Not enough power"

[buckdog05]

I just plugged the PSU into a tester, and all the lights came on except the "-5v" light. The tester didn't beep, however. Does this mean that the PSU is bad?