Boot Up Problem

[MattJ016]

Ok. Here's the problem, I recently built a computer, and when I go to boot it, it does not go through POST, but the fans do turn on, so I went out and bought a CPU with a 533mhz bus and it works fine. Now you would think that the reason it doesn't work it cause the none working processor is 800mhz, but I bought the mobo and the CPU in a combo and the mobo does support 800mhz processors. I've tried updating the BIOS, and nothing, I've tried the bare bones boot, nothing. I've tried the CPUin another computer and it works fine, I've also tried another 80mhz processor in my computer and it does not work. So m conclusion is it might be the power supply. I've also looked for jumper settings on the mobo and coudln't find any. Here's are teh specs of my computer:
P4 2.8GHZ w/ HT 800MHz bus (not working)
P4 2.66GHz 533MHz bus (works fine)
1GB PC 3200 Dual Channel DDR Ram
400 Watt Generic Brand (realPCpower I believe) PS
Asus IS7-E Mobo
Radeon 9800 Pro
180GB 8mb cache HDD
Floppy and all that good stuff.

Any help would be greatly apprieciated. Thanks

 

[ScrapSilicon]

Asus IS7-E Mobo

was this combo bought used..? anyway it might be either a bios or a mobo issue

 

[phpdog]

Hi ,

If that's an Abit IS7 -E board ,

Should check that you have the latest BIOS BIOS - Version 22 - Abit IS7 -E

Or that you have at least BIOS revision 20 if its a prescott chip .

My LanParty 875PRO board done that , fans came on , motherboard LED's came on , but nothing else happened , in my case it was the P4 chip that was broken .

BTW this might sound daft , but did you reset CMOS jumper before changing CPU and have you plugged the P4 connector in .