Spontaneous Reboots, No BSOD
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Posted by WaterWatcher on February 17, 2008, 3:25 pm
Please log in for more thread options Automatically restart in Startup and Recovery in Windows XP but still it just reboots with no error message. The system specs: Abit UL8 motherboard Athlon 64 3200 Kingston ValueRam 512 x 2 MSI 6600GT AGP video Antec 350W PS Sound Blaster Live! Value Memory card reader (USB) Samsung DVD ROM Lite On DVD burner I've resetted the memory and PS connections to the mobo. Memtest 86 does not show any errors. Nor does the Abit system testing utility (no overheating, PSU voltages OK). I've tried one memory stick, then the other, alone. No dice. If I press on the memory modules with the computer running, it will reboot. It seems more likely to do it during ordinary usage if I have a memory card in the reader, or if I'm backing up to my USB external hard drive. Any ideas what to check next? | ||||||||||||||||
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Posted by meerkat on February 17, 2008, 3:27 pm
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Posted by kony on February 17, 2008, 9:30 pm
Please log in for more thread options On Sun, 17 Feb 2008 12:25:41 -0800, "WaterWatcher"
>My homebuilt PC often reboots itself. I've unchecked the box for
>Automatically restart in Startup and Recovery in Windows XP but still it >just reboots with no error message. The system specs: > >Abit UL8 motherboard >Athlon 64 3200 >Kingston ValueRam 512 x 2 >MSI 6600GT AGP video >Antec 350W PS >Sound Blaster Live! Value >Memory card reader (USB) >Samsung DVD ROM >Lite On DVD burner > >I've resetted the memory and PS connections to the mobo. Memtest 86 does >not show any errors. Nor does the Abit system testing utility (no >overheating, PSU voltages OK). I've tried one memory stick, then the other, >alone. No dice. If I press on the memory modules with the computer running, >it will reboot. It seems more likely to do it during ordinary usage if I >have a memory card in the reader, or if I'm backing up to my USB external >hard drive. > >Any ideas what to check next? It seems odd that it coincides with using a memory card or USB external drive AND when you press on the memory modules. I'd wonder if these might be unrelated. You might take the memory out, inspect the contacts on it and in the slot as much as possible. How long since the system was built, how long has it ran in it's present configuration (without opening the case to change anything nor clean out dust, etc)? We don't know if it had formerly ran ok without any changes or if it has developed this problem later. Try leaving it sitting in a bios menu page to see if it also reboots then. Is it possible the reboot coincides with some software? I have rarely come upon bad driver-software combinations where the software actually causes the hard drive to spin down then whole system resets and it spins up and boots again. If it does reset/reboot while sitting in the bios, (not pressing on the memory, just leaving it sitting there running) I would suspect the power supply or motherboard but with such a brief intermittent problem it'd be hard to troubleshoot without swapping in some known good parts. You might also check for common problems like failed fans, unplug the PSU connectors to the board and inspect the contacts for malformation, discoloration, etc. Without any other leads I would begin to suspect the board either has a crack in it, cold solder joint(s) on something, or less likely it might have has grown some tin wiskers that are shorting a couple of component leads momentarily. For good measure I'd also pull the psu, leaving it unplugged then take the top off and inspect for any burnt components or vented capacitors. Some Antecs are known to have capacitors prone to failure. If all else fails I would buy a board and PSU from someplace with good return policy and send back whichever you don't need... or you could buy one or the other at a time but it'll take longer to resolve the problem. If you go that route you might also go ahead and pull the board, PSU, etc out of the case and put them on a desk to see if they also reboot outside of the case. | ||||||||||||||||
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Posted by John McGaw on February 18, 2008, 12:54 pm
Please log in for more thread options WaterWatcher wrote:
> My homebuilt PC often reboots itself. I've unchecked the box for
> Automatically restart in Startup and Recovery in Windows XP but still it > just reboots with no error message. The system specs: > > Abit UL8 motherboard > Athlon 64 3200 > Kingston ValueRam 512 x 2 > MSI 6600GT AGP video > Antec 350W PS > Sound Blaster Live! Value > Memory card reader (USB) > Samsung DVD ROM > Lite On DVD burner > > I've resetted the memory and PS connections to the mobo. Memtest 86 does > not show any errors. Nor does the Abit system testing utility (no > overheating, PSU voltages OK). I've tried one memory stick, then the other, > alone. No dice. If I press on the memory modules with the computer running, > it will reboot. It seems more likely to do it during ordinary usage if I > have a memory card in the reader, or if I'm backing up to my USB external > hard drive. > > Any ideas what to check next? > > > Badly mounted MB? Possibly shorting out to (or in spite of) the standoffs) If you run the system "bare" (out of the case sitting on an insulating surface does it display the same sort of behavior? -- John McGaw [Knoxville, TN, USA] http://johnmcgaw.com | ||||||||||||||||
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> Automatically restart in Startup and Recovery in Windows XP but still
> it just reboots with no error message. The system specs:
>
> Abit UL8 motherboard
> Athlon 64 3200
> Kingston ValueRam 512 x 2
> MSI 6600GT AGP video
> Antec 350W PS
> Sound Blaster Live! Value
> Memory card reader (USB)
> Samsung DVD ROM
> Lite On DVD burner
>
> I've resetted the memory and PS connections to the mobo. Memtest 86
> does not show any errors. Nor does the Abit system testing utility (no
> overheating, PSU voltages OK). I've tried one memory stick, then the
> other, alone. No dice. If I press on the memory modules with the
> computer running, it will reboot. It seems more likely to do it
> during ordinary usage if I have a memory card in the reader, or if I'm
> backing up to my USB external hard drive.
>
> Any ideas what to check next?
>