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computer does not power on...

Discussion in 'Hardware' started by fro, Apr 2, 2004.

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  1. fro

    fro Thread Starter

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    i dont know what happen but my computer does not power on...

    can someone help me. on this... i bought a new power supply.. and put it on.. but still does not power on...
     

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  2. Whitestar

    Whitestar

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    Try unplugging one of the cd drives and see what happens then.
     
  3. n2gun

    n2gun

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    Are you getting any beeps when you try to boot?

    Are the fans turning?

    Are any lights on the front coming on or flashing when you try?
     
  4. fro

    fro Thread Starter

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    no.. no fan no light nothing works...
     
  5. n2gun

    n2gun

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    Unplug everything except the video, cpu fan and try to see if anything happens.
     
  6. fro

    fro Thread Starter

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    ok nothig happens
     
  7. fro

    fro Thread Starter

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    no still not working...
     
  8. crjdriver

    crjdriver Moderator

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    Is this a new build or was it working and just stopped powering on? Since you replaced the ps, which can just about rule out the ps as the source of the problem.

    I would try for a post outside of the case. To do this remove the mb from the case and put it on the box it came in [do not use the anti-static bag; some bags the outer surface conducts electricity] Connect just the video card and one ram chip [unless you have RDRAM and need two] connect the ps both the twenty pin connector and the four pin connector [if used] Now find the connection on the mb where the power switch connects to and jump across the contacts with a small screwdriver. If it posts now, you know that you have either a mounting problem or a bad switch on the case.

    As a quick test for a bad switch, I connect the reset switch to the connectors for the power switch. Push the reset switch and if it powers on, you know you have a bad switch.

    If it does not power up outside of the case, you will need to start swapping parts with known good units ie mb, processor.

    One last thought; make sure you have the hsf plugged into the correct fan header. Some boards will shutdown if they do not detect a fan signal. If this is a new build, make sure the clear cmos jumper is not in the clear position.
     
  9. fro

    fro Thread Starter

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    whats HFS?
    this is not a new build...
     
  10. sir_comp

    sir_comp

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    I don' t want rule out a defective ps that was purchased. There might be a switch on the power supply itself that turns it on and off. Or a bad power cable. Question why was the ps replaced in the first place and was it designed to work with your model of motherboard.
     
  11. n2gun

    n2gun

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    things to check on the power supply. Make sure that it is set to 110 volt and is on.
     
  12. crjdriver

    crjdriver Moderator

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    hsf= heatsink fan
     
  13. crjdriver

    crjdriver Moderator

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    Since it is not a new build, have you tried the test with the power switch / reset switch?
     
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