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Mar 9th, 2008
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Computer shuts down after 4 - 5 seconds

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I'm working on an old Compac Presario. First I had to hot wire the on switch, now when I plug it in it only works for 4-5 seconds then shuts off. I've already replaced the PSU and checked the RAM, but no change. It has an INTEL CPU, haven't looked close enough to tell speed. Any suggestions?
Thanks,
Seelie
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Re: Computer shuts down after 4 - 5 seconds

overheating?

clean out the dust, open all the windows + doors and run it in the middle of an open space

see if it stays on.
Last edited by jbennet; Mar 9th, 2008 at 3:27 pm.
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Re: Computer shuts down after 4 - 5 seconds

jbennet,
The first thing I did was clean out the dust. I now have both the side cover and the face off. I even tried cleaning off the heat sink compound and putting new compound on the CPU. I'm really thinking that the CPU is bad.
Thanks,
Seelie
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Re: Computer shuts down after 4 - 5 seconds

The reason it's shutting off after about 5 seconds is because you "hot wired" the power switch. Power switch is a momentary contact switch. When it stays closed (as in your case), the PC will soft power off after the preset time delay which is usually 4 or 5 seconds.

Disconnect power switch and use a jumper or small screwdriver to short power switch pins on front panel connector.
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Re: Computer shuts down after 4 - 5 seconds

Click to Expand / Collapse  Quote originally posted by willcomp ...
The reason it's shutting off after about 5 seconds is because you "hot wired" the power switch. Power switch is a momentary contact switch. When it stays closed (as in your case), the PC will soft power off after the preset time delay which is usually 4 or 5 seconds.

Disconnect power switch and use a jumper or small screwdriver to short power switch pins on front panel connector.
yep if its constantly on then it will be like pressing and holding the power button to knock the PC off.

The old screwdriver power on technique will verify if you have a serious problem or not.

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Re: Computer shuts down after 4 - 5 seconds
power on pc after 4-5 seconds power off
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This thread is more than three months old

No one has posted to this discussion for at least three months. Please let old threads die and do not reply to them unless you feel you have something new and valuable to contribute that absolutely must be added to make the discussion complete. Otherwise, please start a new thread in this forum instead.
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