Computer abruptly shutting down with no blue screen

wehler53

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Dec 30, 2013
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Hi all,

My friend has recently had a computer built for him, and whenever its under high load it just shuts down with no blue screen or anything logged in event logger. I have a fair bit of experience building computers, so i can guarentee his PSU is basically overkill for what the computer could possibly draw. Now it runs fine in every other aspect and only blackouts when playing certain games. We took it back to the store that built it they said they stress tested it and had no issues and suggested the wall socket is the problem, however since retesting it on a wall socket we know works well with a higher drawing computer and getting the same result, it seems something else is a miss other than the wall socket. Any suggestions or ideas would be greatly appreciated!

Thanks in advance!
 
Solution
check the power connection from the PSU to the GPU

if you have a good motherboard and power supply
if the GPU pulls too much power from the PCI/e slot (because supplemental power is not correct) then the motherboard logic will reset the CPU, and the PSU will not let the CPU start back up until the power condition is ok.

crappy power supplies let the CPU start with bad power and you get bugcheck 0x124 a few seconds into the reboot process.
good power supplies you get a blank screen for a few seconds and a new boot.
no bugcheck and no error log.

often this can be cause by overclocking drivers and bad connections of the supplemental power. Also, if the GPU heats up, then it will require more power.
as it uses more power, it...
So you're talking a hard power off, as in, exactly as though someone just switched the power off at the wall?

The only components that can really do that are the PSU, or potentially hitting a hard temperature limit. Usually with a temp issue you'd get some serious throttling before temps his a point where you hit that temperature ceiling. So that doesn't really make sense either.

What is PSU make and model? Even if it's enough power and good quality, it could be a faulty unit.

You seem like you have access to some other hardware, do you have another PSU with sufficient power to swap in temporarily? As long as you're careful, you don't even need to mount the PSU properly, just wire it in with the case side panel off.
 
check the power connection from the PSU to the GPU

if you have a good motherboard and power supply
if the GPU pulls too much power from the PCI/e slot (because supplemental power is not correct) then the motherboard logic will reset the CPU, and the PSU will not let the CPU start back up until the power condition is ok.

crappy power supplies let the CPU start with bad power and you get bugcheck 0x124 a few seconds into the reboot process.
good power supplies you get a blank screen for a few seconds and a new boot.
no bugcheck and no error log.

often this can be cause by overclocking drivers and bad connections of the supplemental power. Also, if the GPU heats up, then it will require more power.
as it uses more power, it heats up faster. loop continues until something stops it.
like the motherboard logic, or a PCI/e slot melting on a low end motherboard
 
Solution
start with power supply voltages in the bios. the 12v rail should be over or at 12v to start. use hardware info set it tot logging and sensor. also if you have a volt meter connect it to the 12v and ground on the atx 24 pin connector. run his games and watch that the 12v rails is fine.