I Cant Shut Down !

Hi there.

Yesterday i opened the case of my pc to do some dust removal.
I used a clean brush for this purpose, whipping away dust from the
motherboard.
After i reinstalled what i had taken out, following Problem occured:
I startet Windows, did some work and when i wanted to power off the pc
(with Windows-Shut down ), the pc would power down, but imediately
after the
fans stop rotating the system would power on again !.
So i went and disconnected every component from the motherboard but the
CPU and the PSU ( eben the RAM), but the problem persisted.
I used another PSU from a friend, connected it to the motherboard: still
the same Problem.

Has anybody a hint, why the system still wont power down ?

Asus A7v333
AthlonXP 1900+
350W PSU

Jonas

Jonas Dieckelmann wrote:

Has anybody a hint, why the system still wont power down ?

I know this maybe isn't the answer you're looking to, but you can ALWAYS
shut down your PC by flipping the power switch on the PSU to off.

Ive dealt with motherboards that have been shorted out on one of their
mounts before which causes similar behaviour. Try removing everything from
case and running out of the box to see if that solves problem.


"Cyde Weys" wrote in message
...
Jonas Dieckelmann wrote:

Has anybody a hint, why the system still wont power down ?

I know this maybe isn't the answer you're looking to, but you can ALWAYS
shut down your PC by flipping the power switch on the PSU to off.

mikhail wrote:

Ive dealt with motherboards that have been shorted out on one of their
mounts before which causes similar behaviour. Try removing everything from
case and running out of the box to see if that solves problem.

Also, check the stand-offs between the mobo and the case. I
accidentally messed that up once and was having some seriously wacky
problems (luckily nothing permanent, and after realizing what I had
done, I fixed it and the mobo now works fine).

"Cyde Weys" said in :
mikhail wrote:

Ive dealt with motherboards that have been shorted out on one of
their mounts before which causes similar behaviour. Try removing
everything from case and running out of the box to see if that
solves problem.

Also, check the stand-offs between the mobo and the case. I
accidentally messed that up once and was having some seriously wacky
problems (luckily nothing permanent, and after realizing what I had
done, I fixed it and the mobo now works fine).

While plastic standoffs may be available, often metal ones are used. The
pad around the hole in the motherboard has solder (to make it soft) onto
which the metal mount is actually expected to short against so the mobo gets
grounded at that point to the case. It would've had to been a very fat
metal mounting stud to extend beyond the pad or hole which should have its
foils for circuit paths far enough away to accommodate the metal mounting
stud. Maybe you used a mounting stud in a hole that wasn't supposed to be
used for mounting the motherboard.

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Jonas Dieckelmann wrote in message ...
Hi there.

Yesterday i opened the case of my pc to do some dust removal.
I used a clean brush for this purpose, whipping away dust from the
motherboard.
After i reinstalled what i had taken out, following Problem occured:
I startet Windows, did some work and when i wanted to power off the pc
(with Windows-Shut down ), the pc would power down, but imediately
after the
fans stop rotating the system would power on again !.
So i went and disconnected every component from the motherboard but the
CPU and the PSU ( eben the RAM), but the problem persisted.
I used another PSU from a friend, connected it to the motherboard: still
the same Problem.

Has anybody a hint, why the system still wont power down ?

Asus A7v333
AthlonXP 1900+
350W PSU

Jonas


Get your MB manaul out and look at the jumper settings. You may have
hit or knocked a jumper when you were cleaning it. That is the only
thing that I can think of.

-Jay

"Jonas Dieckelmann" said in :
Hi there.

Yesterday i opened the case of my pc to do some dust removal.
I used a clean brush for this purpose, whipping away dust from the
motherboard.
After i reinstalled what i had taken out, following Problem occured:
I startet Windows, did some work and when i wanted to power off the pc
(with Windows-Shut down ), the pc would power down, but imediately
after the
fans stop rotating the system would power on again !.
So i went and disconnected every component from the motherboard but
the CPU and the PSU ( eben the RAM), but the problem persisted.
I used another PSU from a friend, connected it to the motherboard:
still the same Problem.

Has anybody a hint, why the system still wont power down ?

Asus A7v333
AthlonXP 1900+
350W PSU

Jonas

Did you use an anti-static brush? If not, or if you did not take
appropriate anti-static precautions when reaching inside the box or handling
its components, then you could've zapped it. In the hope that you didn't
zap it silly, maybe the CMOS table got corrupted. I have seen where the
CMOS copy of the BIOS is out of sync with the BIOS. Look for a 2-pin header
on the motherboard where you short a jumper across to clear the CMOS. First
yank the power cord from the power supply, then short the header for 10
seconds, then remove the jumper and power up. If you don't have a CMOS
clear header that you can jumper, pull the CMOS battery out (after first
yanking the power supply cord), wait a minute or two, replace it, and then
power up. When the POST completes and you see the prompt on how to go into
BIOS, enter BIOS and save all settings (to CMOS). You'll also have to redo
any BIOS customizations you had made previously.

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Jonas Dieckelmann wrote in
:

Hi there.

Yesterday i opened the case of my pc to do some dust removal.
I used a clean brush for this purpose, whipping away dust from the
motherboard.
After i reinstalled what i had taken out, following Problem occured:
I startet Windows, did some work and when i wanted to power off the pc
(with Windows-Shut down ), the pc would power down, but imediately
after the
fans stop rotating the system would power on again !.
So i went and disconnected every component from the motherboard but
the CPU and the PSU ( eben the RAM), but the problem persisted.
I used another PSU from a friend, connected it to the motherboard:
still the same Problem.

Has anybody a hint, why the system still wont power down ?

Asus A7v333
AthlonXP 1900+
350W PSU

Jonas







In the BIOS, change the APCI from S1 to S3