Is this PSU or M-board?

[mrshade]

At times my computer won't start up until I shut off the PSU switch in
the back or unplug from wall long enough for lights on the board to go
out. Then and only then will it start.

So I am leaning towards power supply.

I do not get any other errors or lock-ups.

Thoughts?




Knowledge is like money, the less you talk about it
the more people assume you have.

 

[Malke]

At times my computer won't start up until I shut off the PSU switch in
the back or unplug from wall long enough for lights on the board to go
out. Then and only then will it start.

So I am leaning towards power supply.

I do not get any other errors or lock-ups.

The easiest way to troubleshoot is to swap out the psu with a
known-working one. So do that and you'll know whether the psu needs to
be replaced.

Malke

 

[RobertVA]

At times my computer won't start up until I shut off the PSU switch in
the back or unplug from wall long enough for lights on the board to go
out. Then and only then will it start.

So I am leaning towards power supply.

I do not get any other errors or lock-ups.

Thoughts?




Knowledge is like money, the less you talk about it
the more people assume you have.

Be aware that the only things that completely shuts most late model
computers down are the rocker switch on the power supply or unpluging
the AC power cord. Some lockups interfere with the low power scans of
the front panel reset and power buttons. You might be experiencing some
sort of lockup during the operating system's shutdown cycle without
realizing it.

 

[Andy]

At times my computer won't start up until I shut off the PSU switch in
the back or unplug from wall long enough for lights on the board to go
out. Then and only then will it start.

So I am leaning towards power supply.

I do not get any other errors or lock-ups.

Thoughts?

I have a system (Gigabyte GA-K8N Pro) that behaves like this. A
different power supply makes no difference. It always happens after
I've done some work on the computer and reconnect power. However, once
I get it to work, then it will always start up and run very reliably.
So I say the problem is the motherboard (the soft power-on
circuitry)..

 

[mrshade]

Be aware that the only things that completely shuts most late model
computers down are the rocker switch on the power supply or unpluging
the AC power cord. Some lockups interfere with the low power scans of
the front panel reset and power buttons. You might be experiencing some
sort of lockup during the operating system's shutdown cycle without
realizing it.

That's what I have been doing to get it back up and running. Either
the rocker switch or just unplugging the cord from the back. It has to
be off long enough for the M-board lights to go off as just shutting
it off then back on does no good.

The board is an ASUS P4B533-E deluxe. It happens infrequently although
maybe a little more often as of late if I was to think about it. I had
not given ANY thought to a shutdown issue with Win XP. I guess I'll
live with it for now as I don't know where I'd start looking for the
issue.

I still may try a replacement PSU..........Got a new cardd that needs
more power anyhow.

Thanks






Knowledge is like money, the less you talk about it
the more people assume you have.

 

[mrshade]

The easiest way to troubleshoot is to swap out the psu with a
known-working one. So do that and you'll know whether the psu needs to
be replaced.

Malke

I don't have any other issues though. No lockups or other issues
usually related to PSU problems.

RC




Knowledge is like money, the less you talk about it
the more people assume you have.

 

[jt3]

I'd suggest you follow Malke's advice. I have an older machine that did
this until I swapped the PSU. I replaced an electrolytic cap in the old psu
just to test my suspicions and then there was no problem with that psu,
though I wouldn't use it anymore. Point is, given all the above experience,
swapping is your best guide. PSU's are cheap.

J