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- Matt The HepCat
March 25, 2006, 11:53 pm
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XP Pro SP2
A recent problem with my A22P has me puzzled. On power up, goes through
POST then immediately into standby.
F1 gets me into BIOS. But F12 hangs (boot list) and then goes into
I've taken out the NIC because I've read that can cause problems with
Hibernate and XP.
Tried swapping out the RAM.
Switched HDD to no avail.
Thanks a bunch,
Re: From POST to Standby
its beeeeeeen". After hours and hours of research the general
consensus that formed in my mind was this:
1) Problem with the system board
2) Problem with the power supply
3) Problem with the battery
4) Problem with heat (bad fan, choked heat sink, etc.)
You're likely thinking "Well no sh** Sherlock", but given the random
bits and pieces in various forums it was important for me to arrive as
some kind of workable plan. So through a process of elimination I
removed items 2&3, which left system board and heat. Given I couldn't
run PC Doctor for DOS long enough to test the system board I had to
work on heat.
This meant opening up the notebook. I downloaded the Service Manual for
the model and read up. The manual is actually very good and provided a
step-by-step procedure for accessing the heatsink. This meant removing
layers and layers of plastic: keyboard, keyboard bezel, heat shield,
hinge cover, and finally the heatsink.
The challenge is that whole thing snaps together, so you have to be
really careful taking it apart, never force anything. If something
seems caught stop and look around, it's likely a small plastic snap or
clip. I also took pictures as I went, and labeled each screw as it came
out. The last thing you want is to get it all together again only to
find you have an extra screw . . .
So here I am with the whole notebook apart, pieces spread out across my
desk with the guts staring me in the face. Removed the heat sink and
blew it out with my camera puffer (air bulb), man the dust! clouds of
it! Took several minutes to get it to the point where the puffer
didn't produce any dust.
Cleaned up the heatsink and CPU core with 99% isopropyl alcohol,
applied some heat sink paste, and started the process of reassembly;
being really careful to get all the tabs in their proper places, and
snapping carefully in the right spots.
Well, so far it's been running for about a day with no problems. I
did a full PC Doctor DOS analysis with no problems being reported.
So, while it still might be a little early to jump up and down . . . I
think we have solved the problem.
My system freezes and boot problems appear to have been caused by
excessive CPU heat due to a heat sink & fan choked with dust.
So there we go. Again, it might be too early to claim victory, but I
think it's licked.