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Computer Restarts Every 12 Hours


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#1
mocker82

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I'm trying to help out with a friend who runs a small business. He has three computers that seem to restart every 12 hours. Since all three computers are restarting i assume it must be a software problem. I checked Scheduled Tasks but it was empty. Any idea where to begin looking? All i know is that all three computers are running windows xp and are Dell. I can provide further detail if you tell me what you need to know.

Thanks!
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#2
The Skeptic

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If all the computer restart at the same moment then it looks like you have a problem with the electric system of the place, possibly a momentary power cut off or severe voltage drop.
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#3
mocker82

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Would this cause an error to show up in the event log?
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#4
The Skeptic

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I am not sure and I wouldn't try it on my computer but I can't think of anything else but the electric system. Actually it's not entirely true. Years ago I ran a company which built and sold computerized controllers for agricultural uses (environment, feed, weight, lighting control etc). Many of the functions where time dependent. We had a bug in one of our software which caused a complete failure of the computers on the moment the clock had to change from 23.59 to 00.00. I never heard about such a case in PCs but then it may have a somewhat similar problem in one of it's programs.
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#5
mocker82

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I forgot to thank you for your quick reply... So thank you!

Usually a restart due to a power failure should result in a screen saying windows closed in a bad way and ask if I wanted to start in safe mode. Its not doing anything like that .
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#6
The Skeptic

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Not if the computer restarted. Try to press the reset button on your computer (as opposed to hard shut down) and you will see that there is no boot menu showing up. Looks to me like there is a momentary voltage drop that restarts the computers. If you have a UPS try to connect one of the computers to it. If it will keep working after the other computers restarted, then you can be sure that the problem is external to the computers. Whatever the case, I have no other ideas.
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#7
mocker82

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Well thank you for the help. I will make sure to post anything that might work.
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