HP Pavillion Start Problem

[TheCardMan]

I am working on a HP Pavillion 6835, when you plug in the power cord the Fan spins and the lights go on the computer for about 3 seconds followed by a single beep and shuts off. You can not press the power On button, does not do anything. I unseated everything and tested the power supply. I changed the power supply, i changed the memory. Still same issue. The cpu is a Socket370 Celeron 888/128/100/1.7v, I want to see if it is a failing cpu but the only S-370 chip I have is a P3 - 866/256/133/1.7v, will this work or harm anything being that it is a 133 FSB??

Thx

[TheCardMan]

Correction in the Beep Code. When I plug in the power cord I hear one quick beep and then 1 second pause and then a longer sounding beep (not too long) then it shuts off. during the initial power up the PSU fan spins, CPU Fan Spins, Light on drive go on, then everything dead......

[Garak]

one beep usually signfies "post complete" so i would check the motherboard fo and buldging or popped caps. it sounds like the symptoms of a dyining motherboards. or it culd be as simple as changing / reseating the video card. as for checking the cpu, if the motherboard runs a 133fsb cpu then you won't have any issues. personally - i'd be leaning towards the cap issue.

if you need pics of what to be looking for - please ask.

good luck

[TheCardMan]

Yea, checked all the caps and they all seem clean. All look good. I have to check the MB specs for the FSB sped.

Thx

[Ferrit]

Sounds to me like a dead mobo

[DonJ]

From HP's website:

HP and Compaq Desktop PCs - Phoenix BIOS Beep Codes and Error Message Descriptions

HP and Compaq Desktop PCs - Troubleshooting Power Supply Issues

HP Pavilion 6835 Desktop PC - Product Specifications

It says that you have the Intel Celeron 800 MHz processor, Socket 370, 100 MHz FSB speed.

Hope this helps out.