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Thread: Green light yellow light. Computer shuts down spontaneously




  1. #1
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    Angry Green light yellow light. Computer shuts down spontaneously

    Hi, I haven't posted over here in a while, but a problem has come up so hopefully someone can help me fix it.

    Basically, my computer shuts off spontaneously from time to time. By shuts off, I mean it just loses power completely. Sometimes pressing the power button doesn't get it to start either..

    At first, I thought it could be dust build up causing a short or something. I hadn't cleaned my case for a long time, so there was quite a bit of dust in the case. So I cleaned it out good one day, and I also found a pin that had broken off from one of the 5.25 inch drive bay adapters which made me think I had definitely been getting a short somewhere.

    After doing these things, my computer was rock solid stable for over a week, until 20 minutes ago when I had another spontaneous shut down.

    Cracked open the case again, checked all the wires and cables, made sure the memory was seated properly etc. Nothing was amiss.

    After that, the computer booted up fine again, which is how I'm posting this at the moment.

    So what does this have to do with Gigabyte you may be thinking? My motherboard (Gibabyte UD5) LED lights had ONE GREEN AND ONE YELLOW LIGHT on.

    I don't know what it means however, and I lost my motherboard manual, so I have to rely on you fine gentlemen for assistance

    So what does one green and one yellow light indicate?
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  2. #2
    Chike is offline Senior Member
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    Check even log for critica events.
    Heat maybe? Or the PSU is dieing?

  3. #3
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    I checked the event log and it listed "kernel power" as the source. But this doesn't explain the actual cause of the shutdown.

    It can't be heat related either, because my case is well cooled with 7 fans, and I cleaned out all the dust. So if I'm to guess, it could be the PSU, or some problem with the motherboard.

    Like I said in my first post, the motherboard LED lights had one green and one yellow on after the crash.

    Does that mean anything?
    Intel Core i7 920 SLBEJ D0 @ 4.2ghz HT on
    Noctua NH-D14
    GIGABYTE GA-EX58-UD5 Extreme Mode
    12 GB Corsair XMS3 DDR3 @ 2000 9-10-9-24 CR1
    EVGA Geforce GTX 580 SC SLi w/backplates @ 925/1850/4400 :up:
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    Antec HCP-1200w Power Supply
    Samsung 305t Plus 30 inch LCD monitor :D
    Coolermaster HAF 932
    Logitech G500 gaming mouse w/Razer Exact Mat
    Logitech G19 gaming keyboard
    Windows 7 Professional x64
    CyberPower 1500VA/900W UPS back up

    SELLING TWO EVGA GTX 480s!

  4. #4
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    Where are the lights? By the ram? It's either northbridge loading activity or voltage,ill dig manual out and look,is it just an instant shut off/restart or could it be bios setting?
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    Yeah, the lights are right next to the memory, one yellow and one green. And it's an instant shut off with no restart.

    Even the power switch located on the motherboard itself wouldn't turn the computer back on at times.. Turning the power supply switch to off, and letting it sit for a few minutes in that state and then turning it back on seemed to have a positive impact though, but it wouldn't always work.
    Intel Core i7 920 SLBEJ D0 @ 4.2ghz HT on
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    Default Re: Green light yellow light. Computer shuts down spontaneously


  7. #7
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    Are you setting up the BIOS yourself or not? I mean the memory/CPU settings?

    I suppose that really might not matter, since it was working fine but now is not, but it would be good to know.

    You may want to test your memory one stick at a time to be sure none of them are going bad.

    Here is the latest Memtest86+
    Memtest86+ - Advanced Memory Diagnostic Tool

    Test each stick one by one in any white slot, run 5-10 passes per stick and see if any of the three have errors or not.

  8. #8
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    Can memory problems cause a computer to spontaneously shut down though? Usually memory instability problems result in BSODs and other errors, but I'm not certain that it could cause complete power loss.
    Intel Core i7 920 SLBEJ D0 @ 4.2ghz HT on
    Noctua NH-D14
    GIGABYTE GA-EX58-UD5 Extreme Mode
    12 GB Corsair XMS3 DDR3 @ 2000 9-10-9-24 CR1
    EVGA Geforce GTX 580 SC SLi w/backplates @ 925/1850/4400 :up:
    Gigabyte GTS 250 1GB @ 830/2074/2400 PhysX
    Creative X-Fi Titanium Fatal1ty Champion
    Sennheiser HD-555
    Western Digital Velociraptor 600GB x 2 RAID 0
    Sony Optiarc 24x DVD Burner with NEC chipset
    Antec HCP-1200w Power Supply
    Samsung 305t Plus 30 inch LCD monitor :D
    Coolermaster HAF 932
    Logitech G500 gaming mouse w/Razer Exact Mat
    Logitech G19 gaming keyboard
    Windows 7 Professional x64
    CyberPower 1500VA/900W UPS back up

    SELLING TWO EVGA GTX 480s!

  9. #9
    Chike is offline Senior Member
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    By heat I meant CPU or chipset temperature which may be high because the HS moved no matter how many fans you have.
    Do you watche over your temperatures with CoreTemp or Real Temp?
    The PSU fan is working?

  10. #10
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    Default Re: Green light yellow light. Computer shuts down spontaneously

    Quote Originally Posted by Chike View Post
    By heat I meant CPU or chipset temperature which may be high because the HS moved no matter how many fans you have.
    Do you watche over your temperatures with CoreTemp or Real Temp?
    The PSU fan is working?
    I checked both my CPU and chipset temps and they were normal. Also PSU fan is definitely working.

    But here's the kicker. Since that last episode, I haven't had any spontaneous shut downs at all, despite playing a number of games like Dragon Age 2, Mafia 2 etc..

    If it were a memory or instability problem, I think those issues would manifest when I was playing games, seeing as those are the only strenuous programs that I use my computer for.

    The more I think about this, the more I think it could be my PSU screwing up..
    Intel Core i7 920 SLBEJ D0 @ 4.2ghz HT on
    Noctua NH-D14
    GIGABYTE GA-EX58-UD5 Extreme Mode
    12 GB Corsair XMS3 DDR3 @ 2000 9-10-9-24 CR1
    EVGA Geforce GTX 580 SC SLi w/backplates @ 925/1850/4400 :up:
    Gigabyte GTS 250 1GB @ 830/2074/2400 PhysX
    Creative X-Fi Titanium Fatal1ty Champion
    Sennheiser HD-555
    Western Digital Velociraptor 600GB x 2 RAID 0
    Sony Optiarc 24x DVD Burner with NEC chipset
    Antec HCP-1200w Power Supply
    Samsung 305t Plus 30 inch LCD monitor :D
    Coolermaster HAF 932
    Logitech G500 gaming mouse w/Razer Exact Mat
    Logitech G19 gaming keyboard
    Windows 7 Professional x64
    CyberPower 1500VA/900W UPS back up

    SELLING TWO EVGA GTX 480s!

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