Power not turning off

Custom / CUSTOM
September 22, 2009 at 08:45:12
Specs: Microsoft Windows 7 RC 1, 2.402 GHz / 6142 MB
Okay all I have a weird problem. Whenever I plug this system in the lights and all fans come on. The cpu, case fans, and one of the psu fans are all spinning. Pushing the power button does nothing.

Bad power supply?


Likely

Practice makes perfect but only if you practice perfectly!


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#1
September 22, 2009 at 09:10:37
it can be any hardware issue

i have met several so far (assuming that you`re getting no beeps at all ) , like :

- corrupted BIOS
- bad processor
- bad power supply ( less likely )

our patience is big


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#2
September 22, 2009 at 09:18:14
Push the power button and hold it for ~5 seconds. Does that shut it down?

Skip


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#3
September 22, 2009 at 09:21:45
oops

i guess that i got it wrong

i didn`t read the post well and i thought that the system won`t start

sorry, my bad

our patience is big


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Related Solutions

#4
September 22, 2009 at 09:36:25
Skip,

A little more imformation. Holding the power button as long as 45 seconds and nothing. About 6 months ago I had a problem with the power button itself and replaced with a cheap chessey push button from radio shack. All was well. When I went from XP64 to Win7 I started having a new problem. Whenever I would shut down the system would shut off but not the lights and some of the fans, I would have to hold down the power button a few seconds to totaly power down. When I shut down last night I went through this process. When I got up this morning all the lights were back on and flickering. Also I feel a like thumping vibration.. I have pulled vid card and ram no changeI have a much older power supply not sure it will work with this rig but that is my next move I think.

Likley
Oh and yes that cheap button was my first thought.
Practice makes perfect but only if you practice perfectly!


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#5
September 22, 2009 at 09:43:07
go to device manager > expand "Computer" branch > see and tell us what do you see

our patience is big


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#6
September 22, 2009 at 09:47:15
Can't do that it will not boot or anything else for that matter. Just blows cool air and has a pretty light show at this point.

This is the power supply that is in it.

http://www.newegg.com/Product/Produ...

Practice makes perfect but only if you practice perfectly!


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#7
September 22, 2009 at 09:58:50
hold on

it doesn`t boot or you can`t turn it off

you`ve lost me here

if your computer can`t boot, please refer to Response Number 1

our patience is big


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#8
September 22, 2009 at 10:13:11
Although the psu specs seems OK...

Output +3.3V@30A,+5V@36A,+12V1@20A,+12V2@18A,-12V@0.8A, +5VSB@2.5A

I suspect it's a cheapo power supply. A good un for comparison is

http://www.newegg.com/Product/Produ...

All the ON/OFF button does is momentarily connect pins 6&8 on the motherboard (Intel Standard); an ohm meter will test it. It's normally open and only closed when button is depressed.

Edit:

Likely is saying that fans spin, lights light, but nothing else happens. Typical conduct of a pooched power supply.

Skip


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#9
September 22, 2009 at 10:35:59
Not only that it was powered off. When I got up the lights were on. I did not atempt to turn it on they came on by themselves. I am disassembling now. Needs a good cleaning anyway.

Also Skip I did pull the header for all the front panel stuff to rule out some sort of short there. I have pulled and reseated all connections as well.

Likely

Practice makes perfect but only if you practice perfectly!


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#10
September 22, 2009 at 11:14:47
oh man, i am CONFUSED

you can work with your system, but it won`t power off, something like that, right ???

our patience is big


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#11
September 22, 2009 at 11:17:11
No. I powered it off last night. When I got up this morning the fans were all spinning and the lights were flickering. I can not turn it on or off. It does not boot just has continues power to lights and fans.

Likely

Practice makes perfect but only if you practice perfectly!


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#12
September 22, 2009 at 11:27:49
oh fine, i got it now

you can try suggestions in Response Number 1

that might do the trick

if anything is not possible ( like processor change )

follow only the "possible" things

our patience is big


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#13
September 22, 2009 at 12:28:39
Okay all has been disassembled and cleaned including psu. No signs of any damage such as burns or swelled diodes.

Likely

Practice makes perfect but only if you practice perfectly!


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#14
September 22, 2009 at 12:36:10
if it is corrupted bios you can reset it to defaults, here is how:

1.unplug the power cord
2.open the coputer
3.take out the battery
4.wait for a minute
5.put the battery back
6.re-plug the power cord
7.turn on the computer
8.go to bios settings
9.reset to defaults

the list is long, but...

our patience is big


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#15
September 22, 2009 at 13:16:32
Tried that too. Afraid the other psu I have is missing one of the 4 pin connectors for this motherboard. This may take a while. For the time being I have a kitchen table full of parts.

Likely

Practice makes perfect but only if you practice perfectly!


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#16
September 22, 2009 at 13:28:17
I'll bet on the psu. The one you have seems to have a very high failure rate after a few months.

Time to go shopping or rob the lab at school (legally of course).

Skip


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#17
September 22, 2009 at 13:39:31
Yeah I had been thinking that too was just hoping I was missing something.

Thanks guys.

Likely

Practice makes perfect but only if you practice perfectly!


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