hello all,I have a new i7 6700k build that randomly loses power,how to test psu

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reecedog69

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Jan 18, 2012
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18,510
the pc at random times acts like the reset button was hit
need help to diagnose possible psu issueI run win 10 pro 64bit

asus ranger z170 mb with i6700k @4.7 the problem happens at default speeds as well

corsair 1151 water cooler for cpu

6 140mm fans and 1 120mm fan

asus strix gtx 1080

500g Samsung evo ssd

fsp hydro 650w fully modular psu

16g cosair 3000mgz ram that's on asus's vendor list

at idle it draws 57 watts benchmarking video card the highest I've seen is 280 watts

video card doesn't go over 75c cpu stays in the 50's or lower when stress testing

it does reboot leaves no error message happens most when playing world of tanks but also happens when on the web,somestime wont do it for days

sometimes it will happen twice in 10 minutes and I have let video card benchmark run for 45 minutes with no problems
thank you for taking your time to help me
 
Solution
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Maybe give some more symptoms, and what you were doing when they happened. Maybe list the parts in your PC.

The only way I've ever ruled out a PSU as the cause of an intermittent fail was to swap PSUs and see if the problem followed the PSU or stayed with the computer. Reseating all the power cables at both the PSU end (if modular PSU) and at the other end is also a good idea.

You can get some level of comfort that the SW stack is not the problem by downloading a bootable linux diagnostic. There are many free ones. Or download linux on a USB drive and boot from that. If the power problems do not happen when you are on the linux diag disk then the problem could be windows related (and yes window can request the MB do an immediate...
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tsnor

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Nov 20, 2008
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Maybe give some more symptoms, and what you were doing when they happened. Maybe list the parts in your PC.

The only way I've ever ruled out a PSU as the cause of an intermittent fail was to swap PSUs and see if the problem followed the PSU or stayed with the computer. Reseating all the power cables at both the PSU end (if modular PSU) and at the other end is also a good idea.

You can get some level of comfort that the SW stack is not the problem by downloading a bootable linux diagnostic. There are many free ones. Or download linux on a USB drive and boot from that. If the power problems do not happen when you are on the linux diag disk then the problem could be windows related (and yes window can request the MB do an immediate power off).

If the PC is powering off while running diags remove all parts except the CPU, MB, CPU fan and the bootable USB. See if that works all right. I've seen these problems traced back to a PCI network card that was only 1/2 way inserted and causing a short. I've read about pinched wires in new build, bad MB standoffs, etc all causing pwoer problems. GL.
 
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Nicholas Coon

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Aug 8, 2013
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i would say it is your psu doing it you have enough watts to cover the system operations also reading some reviews on the psu other people to seem to have problems with it so in my opinion try swapping it out for a different if it still does it check your compactors on your motherboard on of them could be going out edit the do make psu testers but i am not sure if they really work that well
 
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