failing psu?

Discussion in 'Power Supplies' started by plummer66, Dec 10, 2012.

  1. plummer66

    plummer66 Senior member

    Joined:
    Nov 10, 2004
    Messages:
    456
    Likes Received:
    0
    So i rebooted my machine yesterday to find out that i will not reboot.
    -new parts about a week old (asus p8z77-v), i3570k.
    -older parts 8 gigs of mushkin ram -ati 5870 vid
    -antec 750 watt psu (as far as I can remember).

    Machine tries to boot...but does not. Sounds like my CPU fan starts up on a regular speed and then slows down, goes up and then down. Mouse and keyboard power up....and then power off, continue to do this.

    I am thinking it is PSU....but I would like anyone guesses to make sure I am going down the right path.

    Thanks!
     
  2. Loading...

    Similar Threads - failing Forum Date
    How can I tell if my PSU is failing? Power Supplies Nov 1, 2016
    New PSU and Stabilized OC now fails? Power Supplies Jul 30, 2016
    Failing PSU? Node 304 Power Supplies Sep 26, 2015
    PSU failed or motherboard problem? Power Supplies Aug 9, 2015
    corsair tx850 failing? Power Supplies Feb 1, 2015

  3. Ketchup

    Ketchup Elite Member

    Joined:
    Sep 1, 2002
    Messages:
    13,746
    Likes Received:
    128
    Clear the CMOS and try again. Have you updated the BIOS recently?

    Could be the power supply, but lets try this first. Sounds like you're stuck in a boot loop.
     
  4. plummer66

    plummer66 Senior member

    Joined:
    Nov 10, 2004
    Messages:
    456
    Likes Received:
    0
    thx dude. Good idea. I will try tonight and report back my findings. Yes it has the latest BIOS as well.
     
  5. Fallengod

    Fallengod Diamond Member

    Joined:
    Jul 2, 2001
    Messages:
    5,612
    Likes Received:
    1
    Sounds like boot loop issue to me. That issue plagued many motherboards.
     
  6. riva2model64

    riva2model64 Member

    Joined:
    Dec 13, 2012
    Messages:
    41
    Likes Received:
    0
    My motherboard would have the boot loop issue when it lost power. . I went to sleep during a storm and when I woke up, the computer was still restarting! Yeah I had to unplug the computer from the wall to get it working again.

    When diagnosing comp issues, it usually helps to test the computer with just one stick of ram in it (to eliminate variables).
     
  7. Fallengod

    Fallengod Diamond Member

    Joined:
    Jul 2, 2001
    Messages:
    5,612
    Likes Received:
    1
    You know why that issue happens right?

    It happens because motherboards have a backup bios that is older than the bios flashed. So when an issue happens, like losing power, it like trys to revert to the wrong bios which has things changed which causes it to loop over and over.

    I think one of the fixes for that was updating the backup bios (if possible) to the same bios which is currently loaded.
     
  8. dawp

    dawp Diamond Member

    Joined:
    Jul 2, 2005
    Messages:
    7,406
    Likes Received:
    30
    just had a antec psu go out on me, would boot loop at first and stopped even that in short order.

    opened it up and it had several bulging caps.

    if possible, try another power supply.

    how old is this power supply? if it's 5+ years old, it would definitely be suspect.
     
    #7 dawp, Dec 14, 2012
    Last edited: Dec 14, 2012
  9. riva2model64

    riva2model64 Member

    Joined:
    Dec 13, 2012
    Messages:
    41
    Likes Received:
    0
    I didn't know that, but it makes sense. I have a dual-bios mobo, and I have flashed the bios twice. It completely slipped my mind to update the back-up bios.

    I "fixed" the issue though, by telling the computer to remain off after a power-loss (it was on a resume state setting before).

    I'm just worried that my hard-drive lost some years off its life after restarting several hundred times in a loop o_O
     
    #8 riva2model64, Dec 14, 2012
    Last edited: Dec 14, 2012
  10. tweakboy

    tweakboy Diamond Member

    Joined:
    Jan 3, 2010
    Messages:
    9,518
    Likes Received:
    2
    This is why I always recommend Thermaltake PSUs,

    Mines going strong since 2007. thx gl
     
  11. lehtv

    lehtv Elite Member

    Joined:
    Dec 8, 2010
    Messages:
    11,873
    Likes Received:
    70
    FTFY