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I've been having an issue with random shutdowns on my main build as of recently. (specs at bottom)
3x in the past month my machine has suddenly shutdown either while gaming (Diablo 3 auction house, moderate GPU/CPU load) or within several minutes of quitting the game. The shutdown is abrupt, as if I'd pulled the plug out of the socket. The first time it happened, CPU heatsink felt a tad warm. The most recent times, I could not feel anything unusual
Each time it has occurred, the machine will not power up at all afterwards. No lights, no noise, nothing, as if power is disconnected. Flipping the switch on my PSU back & forth had no effect, nor did unplugging/replugging the power cable. Waited 10min with the machine uplugged, still nothing.
Concerned, I decided to test the PSU in one of my older builds. After hooking it all up, the second machine started up and ran normally. When I swapped it back into my main machine, it started but did a single power cycle/boot loop, POST successful on it's second attempt and BIOS gave me a CMOS error, asking me to pick a profile. After this it ran just fine for the next few weeks.
Two days ago it happened again, sudden shutdown, refusal to power back up. I again swapped the PSU out into my second machine, (specs at bottom) which again started normally. I then swapped it back into my main machine, and when I went to start it up it was dead, zero activity after several attempts. Frustrated, I flipped the PSU's switch a few times, replugged the cable a few times, cursed repeatedly and it somehow sprung to life (like the first time, a single power cycle/boot loop, followed by successful POST & CMOS error and then successful boot) It then performed well for the next few hours before I put it to sleep overnight, woke normally in the morning, and ran fine during the day. (didn't try gaming)
Yesterday, it happened a third time, this time 3-4min after I stopped gaming. I had hwmonitor running while gaming, checked immediately after quitting, max recorded CPU core temps between 55-60, GPU temps at 70. (typical for my rig)
To test, I then installed a 400w OCZ stealthxstream from my older build and a HD4850, to rule out PSU/GPU issues.
Last night I shut everything down to connect an alternate internal HD, and afterwards the machine would not power on, zero response to power button just as before.
However... this was with the OCZ 400w and 4850 installed, ruling out the 650w Rosewell PSU & 5850 xtreme as culprits.
Moved the machine to my workbench, opened it up, tried a diff power cable, still no response. Hunted around for loose wires, checked the power/reset switch wires, no effect.
I then pressed lightly on the main ATX 20+4 pin harness, and on my next attempt the machine started somehow, successful POST. Unplugged it, checked for signs of damage/discoloration, all looks normal.
I.... have no clue WTF to think now. My first thought was it wasn't making a proper connection, which would explain why removing/reinstalling or swapping the PSU seemingly resolves the issue each time, but does not explain why it keeps recurring, nor why it seems tied to overall power draw. I'm left thinking it's likely motherboard related, some sort of intermittent power connection?
I do not have another socket 1156 mobo/CPU to try testing with. Any suggestions?
Main build w issues:
Intel i5 760 (mildly overclocked to 150bclk before first failure, set back to default clocks afterwards & kept there since)
Gigabyte H55M-USB3
8GB G.Skill F3-128000CL9-8GBXL (2x 4GB) @ 1.5v
Sapphire HD5850 xtreme (stock clocks)
Rosewell 650w RP650-2 PSU
OCZ Vertex Plus 60GB
3-4 Hard Drives (2x 7200RPM, 2x 5400RPM)
No DVD drive
Fan controller with 4 12v fans.
Second build used to test PSU:
Intel Core 2 Duo E5300 @ stock clocks
Gigabyte EP45-DS3R
2GB Kingston DDR2, single stick.
GeForce 8500GT, and alternate Asus HD4850
One 7200RPM drive, no DVD drive
OCZ 400w StealthXStream
one 12v fan
3x in the past month my machine has suddenly shutdown either while gaming (Diablo 3 auction house, moderate GPU/CPU load) or within several minutes of quitting the game. The shutdown is abrupt, as if I'd pulled the plug out of the socket. The first time it happened, CPU heatsink felt a tad warm. The most recent times, I could not feel anything unusual
Each time it has occurred, the machine will not power up at all afterwards. No lights, no noise, nothing, as if power is disconnected. Flipping the switch on my PSU back & forth had no effect, nor did unplugging/replugging the power cable. Waited 10min with the machine uplugged, still nothing.
Concerned, I decided to test the PSU in one of my older builds. After hooking it all up, the second machine started up and ran normally. When I swapped it back into my main machine, it started but did a single power cycle/boot loop, POST successful on it's second attempt and BIOS gave me a CMOS error, asking me to pick a profile. After this it ran just fine for the next few weeks.
Two days ago it happened again, sudden shutdown, refusal to power back up. I again swapped the PSU out into my second machine, (specs at bottom) which again started normally. I then swapped it back into my main machine, and when I went to start it up it was dead, zero activity after several attempts. Frustrated, I flipped the PSU's switch a few times, replugged the cable a few times, cursed repeatedly and it somehow sprung to life (like the first time, a single power cycle/boot loop, followed by successful POST & CMOS error and then successful boot) It then performed well for the next few hours before I put it to sleep overnight, woke normally in the morning, and ran fine during the day. (didn't try gaming)
Yesterday, it happened a third time, this time 3-4min after I stopped gaming. I had hwmonitor running while gaming, checked immediately after quitting, max recorded CPU core temps between 55-60, GPU temps at 70. (typical for my rig)
To test, I then installed a 400w OCZ stealthxstream from my older build and a HD4850, to rule out PSU/GPU issues.
Last night I shut everything down to connect an alternate internal HD, and afterwards the machine would not power on, zero response to power button just as before.
However... this was with the OCZ 400w and 4850 installed, ruling out the 650w Rosewell PSU & 5850 xtreme as culprits.
Moved the machine to my workbench, opened it up, tried a diff power cable, still no response. Hunted around for loose wires, checked the power/reset switch wires, no effect.
I then pressed lightly on the main ATX 20+4 pin harness, and on my next attempt the machine started somehow, successful POST. Unplugged it, checked for signs of damage/discoloration, all looks normal.
I.... have no clue WTF to think now. My first thought was it wasn't making a proper connection, which would explain why removing/reinstalling or swapping the PSU seemingly resolves the issue each time, but does not explain why it keeps recurring, nor why it seems tied to overall power draw. I'm left thinking it's likely motherboard related, some sort of intermittent power connection?
I do not have another socket 1156 mobo/CPU to try testing with. Any suggestions?
Main build w issues:
Intel i5 760 (mildly overclocked to 150bclk before first failure, set back to default clocks afterwards & kept there since)
Gigabyte H55M-USB3
8GB G.Skill F3-128000CL9-8GBXL (2x 4GB) @ 1.5v
Sapphire HD5850 xtreme (stock clocks)
Rosewell 650w RP650-2 PSU
OCZ Vertex Plus 60GB
3-4 Hard Drives (2x 7200RPM, 2x 5400RPM)
No DVD drive
Fan controller with 4 12v fans.
Second build used to test PSU:
Intel Core 2 Duo E5300 @ stock clocks
Gigabyte EP45-DS3R
2GB Kingston DDR2, single stick.
GeForce 8500GT, and alternate Asus HD4850
One 7200RPM drive, no DVD drive
OCZ 400w StealthXStream
one 12v fan
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