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PC Intermittently Losing Power?

Zilla360Zilla360 Spaaaace!In Space.Registered User regular
edited September 2008 in Moe's Stupid Technology Tavern
Suddenly started last night, was watching a movie when all of a sudden - THWONK! PC turns itself off.

Ever since then it won't stay on for more than 10 minutes, so I'm writing this really quickly, have changed the power lead to see if it's the plug's fuse.

My PSU is a Corsair 550w, it's only three months old...?

Zilla360 on

Posts

  • PeregrineFalconPeregrineFalcon Registered User regular
    edited August 2008
    What's the rest of your system?

    Sounds like you have a short-circuit somewhere. Check your motherboard standoffs and other bits.

    Looking for a DX:HR OnLive code for my kid brother.
    Can trade TF2 items or whatever else you're interested in. PM me.
  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    Damnit, just did it again, 15 minutes is my record so far. Motherboard standoff's seem fine.

    It's definitely not OS related, it even happens during a Memtest86+ run, and sitting idle in the BIOS HW monitor. Voltages look normal. :|

  • PeregrineFalconPeregrineFalcon Registered User regular
    edited August 2008
    Zilla360 wrote: »
    Damnit, just did it again, 15 minutes is my record so far. Motherboard standoff's seem fine.

    It's definitely not OS related, it even happens during a Memtest86+ run, and sitting idle in the BIOS HW monitor. Voltages look normal. :|

    That's bad news. Can you swap anything out to play Isolate-The-Failed-Part?

    Check for short-circuits - frayed wires, something caught on an edge of the case, motherboard standoffs, etc.

    Looking for a DX:HR OnLive code for my kid brother.
    Can trade TF2 items or whatever else you're interested in. PM me.
    Zilla360
  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    I'm definitely thinking failing PSU. It'll only power back on after isolating it at the back for a couple of minutes...

  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    ...and discharging all the capacitance(?)

  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    ...blue led on the front ACPI power button.

  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    This is so annoying. It seems completely random and not OS dependent. :(
    I'm going to try a new surge protector.

  • PeregrineFalconPeregrineFalcon Registered User regular
    edited August 2008
    Did you check for short circuits yet? Yes or no.

    Looking for a DX:HR OnLive code for my kid brother.
    Can trade TF2 items or whatever else you're interested in. PM me.
  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    Yes. Used my snakelight + magnifying glass.

    This build has been running fine for three months now, nothing's changed internally H/W-wise. :)

  • PeregrineFalconPeregrineFalcon Registered User regular
    edited August 2008
    Zilla360 wrote: »
    Yes. Used my snakelight + magnifying glass.

    This build has been running fine for three months now, nothing's changed internally H/W-wise. :)

    All the fans are running? No dust buildup?

    It's either PSU failing specifically, or a thermal failure which the "dead, and doesn't come back on for a few minutes" makes me hint at.

    Looking for a DX:HR OnLive code for my kid brother.
    Can trade TF2 items or whatever else you're interested in. PM me.
  • Dunadan019Dunadan019 Registered User regular
    edited August 2008
    does it last longer if you leave it off for a while?

    also monitor your temperatures to see how hot everything gets.

  • wunderbarwunderbar Registered User regular
    edited August 2008
    I'd put my money on overheating or a bad PSU.

    What are your temps?

  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited August 2008
    All my temps look fine, I'm monitoring using HW monitor.
    I had it on for four hours, up until just 10 mins ago I was in the middle of a TF2 game, and it did it again D:.

    It seems completely random, like a Ghost in the machine... :/

    I've ordered a new PSU in any case:
    Spoiler:
    Although it means no Spore for me ($$) in September. :(

  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited September 2008
    UPDATE: WOOOOOOOOOOOOOOOO FUCK YES FINALLY I FIXED THIS. :D :D :D

  • wunderbarwunderbar Registered User regular
    edited September 2008
    I'm assuming the new PSU did it?

    Zilla360
  • Zilla360Zilla360 Spaaaace! In Space.Registered User regular
    edited September 2008
    Yup. Turns out it was the PCI-E (8-pin) power rail that had failed. :)

  • nexuscrawlernexuscrawler Registered User regular
    edited September 2008
    99% of the time these things are the PSU it seems

    Zilla360
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