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Forums › Desktop computing › PC just powered off
olivernz

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#324945 17-Jun-2026 12:55
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Hi all

 

HELP!!! So mid session my PC just turned off. Nothing to do with power to the system or anything so is in the PC itself. 

 

I have removed the PSU (Corsair rm850x), bridged the power on and tested the voltages. All seem as they should be (can't do a power draw test). If I install it into the PC, the AIO pump lights up but nothing else really. Asus MB and and 7800x3d with a 4070 super. 

 

What do I do next to debug?

 

Cheers Oliver

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CYaBro
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  #3503759 17-Jun-2026 13:53
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Try removing the GPU and see if you get anything using the onboard graphics.

 

If you have more than one RAM module could also try removing all but one and test, and if still nothing try the next RAM module by itself.




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olivernz

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  #3503813 17-Jun-2026 17:02
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I found the issue ....after tearing everything apart.... the power cable! Never ever would have though that's be a reason. It is actually bust.

 

 

timmmay
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  #3503829 17-Jun-2026 19:02
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I had an ethernet patch cable between ONT and router go bad once. That was annoying to find.



olivernz

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  #3503872 18-Jun-2026 08:09
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timmmay:

 

I had an ethernet patch cable between ONT and router go bad once. That was annoying to find.

 

 

Had a few of those but I have never ever seen a 220V cable go bust. And just that it can happen freaks me out. Thinking of arcing and similar.

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