Frequent shutdowns, I7-950, where to start?
Posted: Fri May 13, 2011 5:55 am
I have an Intel DX58S0 and i7-950, NOT overclocked, built about 18 months ago and has been rock solid.
The last two boots after it was off and cold it has reset itself every few minutes. It runs for a while (increasingly longer each time), then reboots.
There are no hardware errors in the bios, there are no event log entries of interest (other than the "was unexpected"), there are no overt symptoms on the screen, and no beeps or unusual noises. I ran the CPUID Hardware monitor once and as it reset temperatures were cool and normal (mid 50's c). It is literally as though the reset button was hit.
I have opened it up and while running shaken and pulled every connector and card without impact. I have booted windows (7 x 64) into safe mode and it still fails (plus there are no signs of a blue screen or exception logged). Last time, once it was up and seemed stable, I ran about 12 hours of memory tests without error (not that I specifically suspected memory but figured that was a good mid-level load).
Last time after finally staying up, it stayed up for about two weeks without problems (I usually leave it up except when travelling). This time am on about the 8th boot, not sure if it will stay up.
I've watched the case when it reboots (a bit hard to catch in the act as there is no warning), and I did not notice any flicker in the lights on the fans, just the fan speeded up as it does when it first boots. I cannot swear I would have seen a brief flicker as you have to stare anywhere up to about an hour and I don't quite have that attention span.
WIth no symptoms other than a reboot -- not sure where to start. Any recommendations? I'm thinking power supply, but I do not have a good spare (I have one, but it is an old 400W and not sure that is adequate but may try it anyway, it is close). Currently trying it off the UPS, but not hopeful there, no reason to suspect it.
The last two boots after it was off and cold it has reset itself every few minutes. It runs for a while (increasingly longer each time), then reboots.
There are no hardware errors in the bios, there are no event log entries of interest (other than the "was unexpected"), there are no overt symptoms on the screen, and no beeps or unusual noises. I ran the CPUID Hardware monitor once and as it reset temperatures were cool and normal (mid 50's c). It is literally as though the reset button was hit.
I have opened it up and while running shaken and pulled every connector and card without impact. I have booted windows (7 x 64) into safe mode and it still fails (plus there are no signs of a blue screen or exception logged). Last time, once it was up and seemed stable, I ran about 12 hours of memory tests without error (not that I specifically suspected memory but figured that was a good mid-level load).
Last time after finally staying up, it stayed up for about two weeks without problems (I usually leave it up except when travelling). This time am on about the 8th boot, not sure if it will stay up.
I've watched the case when it reboots (a bit hard to catch in the act as there is no warning), and I did not notice any flicker in the lights on the fans, just the fan speeded up as it does when it first boots. I cannot swear I would have seen a brief flicker as you have to stare anywhere up to about an hour and I don't quite have that attention span.
WIth no symptoms other than a reboot -- not sure where to start. Any recommendations? I'm thinking power supply, but I do not have a good spare (I have one, but it is an old 400W and not sure that is adequate but may try it anyway, it is close). Currently trying it off the UPS, but not hopeful there, no reason to suspect it.