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PSU PC just loses power suddenly

Discussion in 'Tech Support' started by Bloody_Pete, 26 Apr 2025.

  1. Bloody_Pete

    Bloody_Pete Technophile

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    Hi All, started getting some odd behaviours recently, in the middle of gaming the power just completely cuts out with a loud click. If I go into event viewer, it's the usual 'system lost power unexpectedly' errors. The RAM RGB stays on oddly. Pressing the power button does nothing. Both times I kill the power to the system for 10 seconds, then it fires up perfectly fine. I'm thinking my PSU is getting a bit old (nearly 6 years) and the 3090 is slamming some transient loads into it which are tripping it out. What are people's thoughts?
     
  2. Mr_Mistoffelees

    Mr_Mistoffelees The Bit-Tech Cat. New Improved Version.

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    Time to put the old PSU out of it's misery, before something worse happens and it takes something else with it.
     
    Last edited: 26 Apr 2025
    bawjaws likes this.
  3. adidan

    adidan Guesswork is still work

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    Probably time to replace the PSU.

    One time at a previous house it actually turned out the plug socket became duff and it wasn't the PSU.

    But yeah a couple of times I've had similar and then it goes bang or pffft. Luckily they've been built well and never taken anything else with them.

    E: 6 years isn't old for a quality PSU though (not sure what you have)
     
  4. bawjaws

    bawjaws Multimodder

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    I had something similar happening to me a couple of years back. Turned out that the GPU power connectors were a tiny bit loose (the actual plugs on the end of the cables - I ended up having to swap the PCIE power cables for new ones). I reckon that's a bit of a long shot for you, but worth checking?

    If I was a betting man though, I'd say that your PSU isn't up to it. Do you have a spare you can test with?
     
  5. David

    David μoʍ ɼouმ qᴉq λon ƨbԍuq ϝʁλᴉuმ ϝo ʁԍɑq ϝμᴉƨ

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    Yeah, I'd guess at transient spikes tripping it too.
     

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