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Thread: monitor wont kick in

  1. #1
    My monitor wont kick in after computer has been shut down unless i unplug main cable from my motherboard and replug it back in. Any ideas why that is

  2. Software & Hardware   -   #2
    clocker's Avatar Shovel Ready
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    What "main cable" on the motherboard are you referring to?
    The VGA (video) cable or something else?
    "I am the one who knocks."- Heisenberg

  3. Software & Hardware   -   #3
    Virtualbody1234's Avatar Forum Star BT Rep: +2
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    Not only "what main cable?" but what monitor and what motherboard?

    Please provide makes and models when discussing hardware problems.

  4. Software & Hardware   -   #4
    the main cable from the power supply to the motherboard
    its a gigabyte motherboard 7vm400am-rz
    radeon 9200 pro video card
    lg studioworks 700s monitor

  5. Software & Hardware   -   #5
    lynx's Avatar .
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    I'm assuming that the whole system is failing to start, in which case it has nothing at all to do with the monitor. If the rest of the system is dead then the monitor itself can't possibly show you anything.

    There are two possibilities:
    1) the PSU is faulty, and is not resetting after shut down. If the fans etc do not power up then this is almost certainly the case, but could still be the problem even if they do.
    2) the motherboard is not resetting after shut down.

    Even when the system is shut down there is still a standby voltage sent to the motherboard. When you remove the power lead even this voltage goes away, which forces both the PSU and the motherboard to reset.

    If you have a spare PSU that's the easiest thing to test first.

    My money is on the motherboard though.
    .
    Political correctness is based on the principle that it's possible to pick up a turd by the clean end.

  6. Software & Hardware   -   #6
    clocker's Avatar Shovel Ready
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    Quote Originally Posted by lynx View Post
    My money is on the motherboard though.
    Maybe that's the problem.
    Loose change on a printed circuit board could cause a variety of shorts.
    "I am the one who knocks."- Heisenberg

  7. Software & Hardware   -   #7
    Chewie's Avatar Chew E. Bakke
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    My money is on the PSU.
    There isn't a bargepole long enough for me to work on [a Sony Viao] - clocker 2008

  8. Software & Hardware   -   #8
    tesco's Avatar woowoo
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    BTW you'll get the computer to start right back up if you unplug the power supply from power or turn it off from the switch at the back.
    Just so you know, so you're not risking breaking something by unplugging wires inside your computer.

  9. Software & Hardware   -   #9
    lynx's Avatar .
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    Quote Originally Posted by rossco View Post
    BTW you'll get the computer to start right back up if you unplug the power supply from power or turn it off from the switch at the back.
    Just so you know, so you're not risking breaking something by unplugging wires inside your computer.
    I'm pretty sure that's what he meant he has been doing, but maybe he'll come back and clarify.

    If I'm wrong, then the chance that the problem is in the PSU are almost negligible.

    And if he doesn't respond soon we can assume he's already broken something.
    .
    Political correctness is based on the principle that it's possible to pick up a turd by the clean end.

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