PC powers up, HDD and CD lights stay solid, no POST

[dseaver]

So I went to shut down my computer last night and it appeared to have locked up. I had used it 2 hours prior to it failing. I went and hard booted it and it refused to post. The HDD activity LED and CD activity light stay lit, and it wont POST. THe rig is a 4 year old P4 rig that I had built myself.

Parts (from memory until I can get home):
Asus P4E800 Deluxe (not sure on this one)
Pentium 4 3.0 (OC to 3.3)
2 X 512MB Corsair ValueSelect DDR 400 RAM
ATI 9600 All-in-Wonder Card
Audigy 2 Value
Ultra (I think) 450W PSU

Is it the Mobo that failed or the PSU maybe? I putting my bet on the Mobo for now.

 

[buecker]

Was it a short at all or did the mobo just die?