Power button computer problem

Discussion in 'OT Technology' started by kingtoad, Mar 21, 2007.

  1. kingtoad

    kingtoad OT Supporter

    Joined:
    Sep 2, 2003
    Messages:
    55,923
    Likes Received:
    11
    Location:
    Los Angeles
    My computer recently started acting very strange. I would have to press the power button two to three times before my computer would actually turn on. Starting early this week, I'd have to press my button a good seven or eight times to turn it on. I was observing my computer today, and the mother board light wasn't on. I pressed the button a few times and the motherboard light slowly appeared, but when the motherboard light was on, all I had to do was press the power button ONCE and it would turn on.

    Anybody know what would cause this? Power supply? Motherboard? I checked the jumpers on my motherboard that correspond to my power button and they're set correctly.

    Thanks in advance.
     
  2. MSA

    MSA You're gonna be the one that saves me, And after a

    Joined:
    Mar 20, 2005
    Messages:
    1,296
    Likes Received:
    0
    Location:
    Ohio
    check for blowing out of capacitors. my old abit mobo did that once. does the ps start running as soon as you hit the power button?
     
  3. kingtoad

    kingtoad OT Supporter

    Joined:
    Sep 2, 2003
    Messages:
    55,923
    Likes Received:
    11
    Location:
    Los Angeles
    No, nothing runs when I press the power button. The motherboard light slowly turns on, then when it's on, I can press the button to turn my computer on.
     
  4. P07r0457

    P07r0457 New Member

    Joined:
    Sep 20, 2004
    Messages:
    28,491
    Likes Received:
    0
    Location:
    Southern Oregon
    could be many things, but I would start with psu.
     
  5. kingtoad

    kingtoad OT Supporter

    Joined:
    Sep 2, 2003
    Messages:
    55,923
    Likes Received:
    11
    Location:
    Los Angeles
    Yeah, my initial thought was my power supply. I'll give that a test first.
     
  6. Hate Crime

    Hate Crime Don't Hate OT Supporter

    Joined:
    Mar 12, 2006
    Messages:
    5,255
    Likes Received:
    0
    Location:
    Minnesota
    Open a paper clip up and pull the 20 pin power connecter out of the motherboard. Make sure the power supply is still plugged in and stick one end of the paper clip into a black socket of that plug and the other end in a green socket. If the power supply fan spins it should be OK.
     
  7. P07r0457

    P07r0457 New Member

    Joined:
    Sep 20, 2004
    Messages:
    28,491
    Likes Received:
    0
    Location:
    Southern Oregon
    do NOT just do what hate-crime said. Some PSUs have multiple "green" connectors that are not neccessarily what you want. You can short Power-Good to Ground, but they are not necessarily the only pins with those colors on the connector (not all psus follow spec).

    Even in this scenario, it does not properly test the voltage/current output of the unit.
     
  8. Hate Crime

    Hate Crime Don't Hate OT Supporter

    Joined:
    Mar 12, 2006
    Messages:
    5,255
    Likes Received:
    0
    Location:
    Minnesota
    Of course it doesn't but you have the ability to test if it can turn on successfully. Unless it's a proprietary power supply from BESTEC from 10 years ago, any ATX power supply will work with a paper clip.
     
  9. copiertalk

    copiertalk Secure Our Borders! OT Supporter

    Joined:
    Sep 21, 2003
    Messages:
    5,695
    Likes Received:
    0
    Location:
    west texas
    It is a momentary switch, could the switch be bad? take an ohm meter and about 10 seconds to test if it is working.
     
  10. Demon Llama

    Demon Llama #42 Havoline Dodge

    Joined:
    Feb 22, 2005
    Messages:
    172
    Likes Received:
    0
    Location:
    Lauderhill, FL
    My New computer setup was doing the same thing, i have to like bash the power button for it to fire up but once it does... no problems.
     
  11. kingtoad

    kingtoad OT Supporter

    Joined:
    Sep 2, 2003
    Messages:
    55,923
    Likes Received:
    11
    Location:
    Los Angeles
    I also noticed if I power off my power supply and turn it back on, I will be able to turn it on again, with one press.
     
  12. Synner

    Synner New Member

    Joined:
    Jan 11, 2005
    Messages:
    2,461
    Likes Received:
    0
    Sounds like a capacitor to me. If the light's slowly coming on, then it works fine afterwards, it sounds like it's just not holding the power that it should, so you kind of have to "prime" the system to get it to work.
     
  13. kingtoad

    kingtoad OT Supporter

    Joined:
    Sep 2, 2003
    Messages:
    55,923
    Likes Received:
    11
    Location:
    Los Angeles
    Would that be motherboard or power supply related?
     
  14. P07r0457

    P07r0457 New Member

    Joined:
    Sep 20, 2004
    Messages:
    28,491
    Likes Received:
    0
    Location:
    Southern Oregon
    could be both. An ATX PSU has a "power-good" circuit that requires priming, as well. So try a different PSU (easiest to swap out) and if the situtation doesn't improve, it may be the motherboard.
     
  15. deusexaethera

    deusexaethera OT Supporter

    Joined:
    Jan 27, 2005
    Messages:
    19,712
    Likes Received:
    0
    Assuming you don't fuck up and kill yourself, yes.

    Better to not take this approach, it's too risky for a novice. And this guy is probably a novice, since he's asking for help with this problem.
     
  16. kingtoad

    kingtoad OT Supporter

    Joined:
    Sep 2, 2003
    Messages:
    55,923
    Likes Received:
    11
    Location:
    Los Angeles
    Replaced the power supply. Works like a charm.

    Thanks guys.
     

Share This Page