Won't POST

[zaarenoc]

Beep Codes Apr 7, '09 7:48 PM
for everyone

I'm working on an HP Pavilion XT919, with the CUW-AM
Motherboard.
No operating system. When I first started on this
computer it would boot to the point
where it said "No Operating System", now it just beeps
one short and one long. (AMIBIOS.)
and shuts off immediately.

I have removed all cards, drives, RAM, etc. and still
just the beep code then shutdown. I
did notice that the power switch won't do anything
unless I first unplug the power cord and wait for the
green light on the power supply to go out, then it will
power up briefly. I have checked the power supply with
my tester and it tested good.

I've switched RAM to different slots, tried different
RAM... no joy. AMIBIOS doesn't actually show a beep
code for the one short and one long, but IBM BIOS says
it indicates system board failure.
I can't use my POST card because it doesn't stay on
long enough to get a reading.

Help!

Doug

 

[Hefemeister]

Well you have tried most of the important things already.

Try to reset cmos.
strip computer down to just cpu ram and vid card if applicable.
See if you can boot with memtest and test memory.
After that you are most likely looking at a board failure.

 

[Jorsoft]

I cant think of anything else other than what Hefe said. I'm going with board failure if that doesnt work.

 

[SparkMonkeyHellion]

next step would be something drastic, like unleashing the steel-eating termites and/or incendiary mice

 

[H4x3r]

you've pretty much covered all your bases there. looks like a bum board to me