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Computer suddenly restarts - dealt with in every way

Simple. The computer just suddenly decides to do arestart. I've been through every possible scenario and tested the memory, processor temperature, hard drives for faults with their manufacturers' software, bought a new power supply... no, it just still does it. Perhaps the strangest thing about these restarts is their frequency. They're rare, about once a month. And they do not seem correlated with any hardware or software activity that was going on at the time.

Windows is set not to restart if it encounters a BSOD so I'm really out of ideas. I've eliminatd any software causes such as updates requiring restart, viruses and so on. So what DO I know? I know only one thing. When my computer restarts, it does a short beep. Now I'm sure many of our computers beep on startup, as does mine, but this one ONLY beeps on startup if:

-it is starting up from power-off mode
-its BIOS had been configged and a restart is required to apply them
-you push the restart button on the case

A restart from inside the OS or one caused by a BSOD will not make it beep. Additionally, my UPS sometimes makes a clicking sound before the restarts. Again the power supply has been changed.

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"Additionally, my UPS sometimes makes a clicking sound befor

In reply to: Computer suddenly restarts - dealt with in every way

"Additionally, my UPS sometimes makes a clicking sound before the restarts. Again the power supply has been changed."

Using that as the big clue, I would supersize that power supply. If it was 350 Watts I'd try some 700 Watt model. The UPS dipping out is the big clue here. Your PC is just suffering a loss of AC so there is nothing truly wrong here with the PC. But by supersizing the PSU in the PC you can effectively give it some a little more time it will survive without AC.

Another owner discovered it was the UPS. The reboots stopped when the UPS was removed from the system.

Bob

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I tried removint the UPS

In reply to: "Additionally, my UPS sometimes makes a clicking sound befor

I have had the UPS removed for a month in one such test. The computer still rebooted. My PSU is a 470W Thermaltake. I have tried bringing up all HDDs to max activity aswell as the DVD and got no restarts even after 20 minutes. I have to mention that some of the restarts occurred while the computer was idle, so it doesn't seem like my PSU can't cope with power requirements. Could the motherboard be to blame in any way? It is the only component in the PC that I have not tested, though as far as I understand bad capacitators would cause much more frequent reboots, plus they'd get worse with time. I've had this computer for an year and the issue has remained constant...

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The click is still the clue.

In reply to: I tried removint the UPS

Do you have a laptop? I bet it won't reboot since it has a battery to run from. I've had to show people that bad AC is the cause of reboots when the hardware is just fine. To show it I use the laptop with and then without the battery. Sadly this sort of testing is only done with paying clients...

If you feel the motherboard is the issue why not get it replaced?

Bob

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.

In reply to: The click is still the clue.

No, it's a desktop.

I don't know about AC, I really don't know. I've had it supplied by an UPS which is supposed to provide a constant stream of AC whatever happens to the power, then had it removed but the computer STILL restarted once, now how am I to know if that was from the AC line itself or the same problem that's plagued it before?

And I can't do that because I'm not SURE the motherboard is the issue.

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That's the issue today...

In reply to: .

Owners can't be sure so they may have to call in support to look it over. But such support is more costly than a new motherboard.

I can see where many would get stuck in "what to do?" land.

-> You suspect the motherboard so you have choices.
-> An UPS is NO ASSURANCE that the AC is uninterrupted.

Bob

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/

In reply to: That's the issue today...

I had the UPS serviced and they found no problems with it. And the main reason why I'm not sending this to tech support is because I NEED my computer every day.

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Then I'd make a backup plan.

In reply to: /

Let's forget fixing it since that is not an option (you need it 24x7.)

The next best step is to have what you can't lose on 2 or more backups. I can't count how many lose it all because that had "a backup." Then the day arrived and the lone backup couldn't be read, used or such.

I feel for you but also understand the issues too well.

Bob

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Already on it

In reply to: Then I'd make a backup plan.

Oh I've been making backup plans for it alright. I have Norton Ghost back up my C: to another drive weekly(I have 4 harddrives). And that's not because of the fear of restarts occurring when the computer is working and thus possibly corrupting data, but because I've played with some powertoys before and messed up the MBR a few times.

I'm considering buying a new motherboard yes, and I think I will leave it at that. HOPEFULLY this will get rid of the reboots once and for all.

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I apologize if I already mentioned this one.

In reply to: Already on it

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