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Intel D865PERL motherboard won't boot, no POST

Posted on 2005-04-22
Medium Priority
Last Modified: 2012-06-27
I'm trying to bring back to life a nice custom built rig that has an Intel D865PERL motherboard with a 3.0 Ghz P4 and 1 Gb of RAM.  The owner said he was blasting the dust out of the machine.  When he plugged it back in it wouldn't boot.

I've tried:
 - removing extra PCI cards (TV tuner)
 - swapped in another AGP video card
 - reseated RAM
 - swapped RAM banks
 - replaced RAM with different RAM
 - remove everything except for CPU and RAM
 - test power supply with testing device
 - swapped in a different power supply

With all of the above, the result is always the same.  No POST beeps, no video, fans run, motherboard LEDs lit.

If I remove all the RAM I can get three long beeps in POST.

A few things I might still try:
 - blast machine with high power air stream from an air compressor, maybe some dust got lodged in one of the slots and is shorting it out?
 - double-check for any loose screws or something shorting out the board
 - swap in a PCI video card and remove AGP (this has worked on another system in the past)
 - install RAM in another machine
 - install CPU in another machine (this might be a lot of work)
 - reflash BIOS by setting the jumper to reflash and booting a disk per motherboard manual instructions, maybe BIOS got zapped

I suspect the motherboard has gone bad.  But, I need to prove that (or fix it).  Whatever's wrong I need to be able to tell the owner what it is, rather than "maybe CPU, maybe motherboard, why not just replace both".

What would you do next?

Question by:RickStrobel

Expert Comment

ID: 13848767
I had a client blow out a computer with a compressor.  Unfortunately the compressor blew out a whole lot of moisture and on plugging it back in soon after, took out the board and pretty much everything else attached.  If a compressor was used and it did not have a really good moisture filter and the PC was plugged in again soon after - probably bye bye MB.  He may as well have just put it into the dishwasher.  I know of another that "blasted" out their motherboard with a can of compressed air while the PC was switched on and lost their board that way.  Might as well have taken that one out to the hot tub.

Looks like you've been pretty methodical.  Guess swopping out the CPU then MB is your best way to look for survivors.

Expert Comment

ID: 13848900

"If I remove all the RAM I can get three long beeps in POST." -> this means that the mainboard and the CPU work and miss the RAM. When you put the RAM in - start with only one slot of RAM - , and the video card, but nothing else (besides of course the CPU), is there anything to see on the screen?

LVL 93

Accepted Solution

nobus earned 1000 total points
ID: 13848926
Best way to diagnose is :
-using a PCI video card will help you diagnose the video also (this would be my first step), then:
-take the board out of the case, put it on hardboard surface
-let only be connected mobo,cpu ,1 ram stick, video card, kbd + mouse.
-Try to boot : if no screen try without kbd and mouse, then try with 1 HDD connected
-to diagnose partial if mobo + cpu are working : when under power, hold the power switch for 10 sec; it should power off.
since mobo and cpu need each other to run, it is not possible to diagnose completely which one is bad. my experience tells me that a mobo is bad much more often than a cpu, unless there was a power problem, in which case each or both can be bad.

-testing as many parts as you can in another system will separate the good from the bad; be aware you may have more than 1 bad card or device.
-using a PCI video card will help you diagnose the video also (this would be my first step)
LVL 14

Expert Comment

ID: 13849593
Its possible that some of the dust landed in the RAM slots and is now not letting proper contact between the slot and the RAM stick. I suggest that u take out the mboard from the cabinet and give it a few taps on the reverse side, blow some air into the RAM slots and also the other slots like PCI slots etc and then try to attach the power cable and see if that helps.

You need to ensure that the RAM is getting seated properly. Press it in firmly and give it a little lateral movement just to be sure.

There is a chance that the board might have gone bad. The blowing of air into the board cud have been with enuf force so as to damage some capacitor or a minor component on the board. These are high tech circuits which can breakdown due to this reason.

You can try another things and thats to reset the CMOS and then see if that helps. SOmetimes ESCD wont get updated and clearing the BIOS forces it to happen.


Author Comment

ID: 13891800
Put the CPU and RAM in another system and it worked fine.  There's a quick BIOS reflash process where you boot the computer with a bios file on it and it automatically flashes it.  All you can see is the floppy running.  I tried this and it seemed to do as it was supposed to do.  However, the mb still wouldn't come to life.

I think I tried just about everything listed here and then some.  In the end the client ordered a new board and I put it in today.  Everything is working fine.

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