Computer boots after power supply restarts twice
in [Hardware]
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From: Christopher M. on 16 Jun 2010 22:48 My computer boots after the power supply restarts twice. It seems that I have to unplug it for a while before restarting again. I tried replacing the power supply. Some of the wires from my old power supply to the motherboard were discolored. It was a 4-pin connector. Any ideas? W. Pooh (AKA Winnie P.)
From: Gerard Bok on 17 Jun 2010 05:44 On Wed, 16 Jun 2010 22:48:48 -0400, "Christopher M." <no-spamcm_anon76(a)hotmail.com> wrote: >My computer boots after the power supply restarts twice. > >It seems that I have to unplug it for a while before restarting again. Take a look at http://www.badcaps.net/ If you see familiar pictures there, you have your answer. >Some of the wires from my old power supply to the motherboard were >discolored. That's very odd. Especially if you mean 'burned by over current'. Are you sure your PC is not an ancient Dell type with non-standard PSU wiring ? -- Kind regards, Gerard Bok
From: Grinder on 17 Jun 2010 13:11 On 6/16/2010 9:48 PM, Christopher M. wrote: > My computer boots after the power supply restarts twice. > > It seems that I have to unplug it for a while before restarting again. > > I tried replacing the power supply. > > Some of the wires from my old power supply to the motherboard were > discolored. It was a 4-pin connector. > > Any ideas? > > > W. Pooh (AKA Winnie P.) > > Strangely enough, I saw this pattern with some bad memory modules. For weeks, the machine would startup on the second try. Ultimately, it a lot more sporadic, but it had be baffled for a bit. Also, memory testing did nothing to indicate that I had some bad modules. Either the machine would startup up and memtest could not find anything, or the machine would not start and I could not run memtest. Something else that's worth doing: Minimize your system. Remove any add-in cards you can live without for the the duration of your diagnosis. If you're using a video card, fall back to onboard video if you have it. Unplug extraneous hard and optical drives, as well as USB and firewire devices. Reduce your system to the bare minimum of parts. If the problem persists, you know that it's because of one (or more of those parts) or because of an interaction amongst them. From there, start replacing individual parts with "known good" components to see if you can make the problem go away.
From: GlowingBlueMist on 17 Jun 2010 13:34 On 6/16/2010 9:48 PM, Christopher M. wrote: > My computer boots after the power supply restarts twice. > > It seems that I have to unplug it for a while before restarting again. > > I tried replacing the power supply. > > Some of the wires from my old power supply to the motherboard were > discolored. It was a 4-pin connector. > > Any ideas? > > > W. Pooh (AKA Winnie P.) > > You might want to check for a loose connector or corrosion on the connector. A loose connector might be one that was not seated all the way or more common one or more of the female socket of the connector is slightly oversize so it is not "grabbing" the connector tightly on the motherboard resulting in minor arching, voltage loss, and subsequent heat build up. You might want to unplug things and check for corrosion on the motherboard connector, since you already tried another power supply. Corrosion can cause voltage loss as well as excess heat build up in the connector resulting in the discoloration. After this try the replacement power supply again as the connector of the old power supply may also need cleaning or tightening. If nothing from the above resolves your current problem (no pun intended) I'd try the other suggestions like reseating the memory modules, removing all non-critical hardware as in CD/DVD, non-boot hard drive(s), and any circuit cards that can be temporarily replaced by using any built in motherboard features.
From: Christopher M. on 17 Jun 2010 19:55
"Christopher M." <no-spamcm_anon76(a)hotmail.com> wrote in message news:hvc2gp$v3r$1(a)news.eternal-september.org... > My computer boots after the power supply restarts twice. > > It seems that I have to unplug it for a while before restarting again. > > I tried replacing the power supply. > > Some of the wires from my old power supply to the motherboard were > discolored. It was a 4-pin connector. > > Any ideas? After buying a new CMOS battery for the motherboard, the computer is running a little better. I can now restart successfully. I'm still getting that hiccup with the power supply. I'm guessing it's just a symptom now, that just won't go away. While the computer works when plugged into the outlet, it's not working with the surge protector. Maybe I need a new surge protector, or maybe the load is just too big in my house of hunny. W. Pooh (AKA Winnie P.) |