windows 2003 server

i have a windows 2003 server and lately it keeps rebooting. it may stay on for about 10 min and then it will reboot. no messages come up or errors but it reboots. sometimes it won't even go to the windows loading screen, it stays rebooting during the POST. Any ideas on this before I reinstall the server OS
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timgreen7077Exchange EngineerAsked:
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BITCoolerConnect With a Mentor Commented:
I had that happen to my Small Business Server 2003 edition.  Turned out it was NOT the Windows OS, but a hardware issue.  In my case I had a two Memory DIMMs / slots go bad.  It could also be overheating as one other expert suggested.

I recommend you run hardware diagnostics to see what shows up.
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Darren SharplesSystems SpecialistCommented:
check the event logs.  Also, right click my computer and go to properties, click advanced - startup and recovery, settings and untick "automatically restart". you should then see an error rather than a restart
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Glen KnightCommented:
Sounds like a thermal shutdown.

Check all the fans are working, that the CPU fan is seated properly and double check the power supply.

Try a different power supply if all of the above checks out ok.
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Lee W, MVPTechnology and Business Process AdvisorCommented:
I agree - you need to check for hardware issues.  If Windows is restarting and there's no logs on it's reboot, then it sounds very much like Windows has nothing to do with it, so a reload would just be a waste of time.  I agree that this sounds like a heat issue - although most heat issues I've experienced cause lock-ups, not reboots, but that doesn't mean this isn't a heat issue.
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Chev_PCNConnect With a Mentor Commented:
What brand of server is it?
During boot, can you go into the POST logs and check for events there?
Also check your components (memory, PCI cards, daughterboards) to make sure they are seated correctly. Remember to work static-safe when you do this.
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ind_selvaCommented:
first boot with pc without hdd, pci card,pheriparals. then add one by one check the pc.
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timgreen7077Exchange EngineerAuthor Commented:
I checked the logs and the logs show nothing other than there was a previous unexpected shutdown.  I will it guess it may be hardware related or heat, but I haven't installed any new hardware I checked the RAM and the same thing happened but I will start checking other things. Thanks everyone.
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timgreen7077Exchange EngineerAuthor Commented:
I had a bad memory module. Thanks for the advice.
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