Need Help With Old Motherboard

Discussion in 'General Hardware' started by ghettorare, Aug 27, 2003.

  1. ghettorare

    ghettorare Guest

    Alright, i have an old computer that i took apart to make a new one, now i want to go back and start the old one but for some reason it only turns on when i plug into the wall and it turns on for like 4 seconds and then it turns off, and hittin the power on switch button wont work, i have to unplug it from the wall again, wait a few seconds then plug it back, then it will turhn on for another 4 seconds and then turn off and this will continue all day long.

    Specs of old motherboard:
    GA-71XE AMD 751/756 chipset/ Amd Athlon 600mhz Slot A\266MB RAM, 30GB HD\CDRW 24x4x24x\SB LIVE\3D annihilator Geforce 2.
    any have any idea what could be the prob?
    PSU 300 Watts.

    the computer use to work fine until i move the Hard drive, soundcard, and video card..and since i got a newer, bigger HD, and better Sound card and Video card, i put the old one back and tried to get it runnin and ...well ya'll know what happens. if anyone could have an idea on how to help me wit this issue it would be great help. thanx.
     
  2. phishhead

    phishhead OSNN Senior Addict

    Messages:
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    Location:
    San Diego, California
    I would check the mobo wires. like the reset wires.
     
  3. Taurus

    Taurus hardware monkey

    Messages:
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    Location:
    Sacramento, CA
    it might be too old for this, but maybe it's not detecting a cpu fan spinning so it shuts itself off? my old kt133 board has this ability.

    try to go into the bios and look for that setting or make sure a fan is plugged into the cpu_fan header on the mobo.
     
  4. ghettorare

    ghettorare Guest

    ^^ yeah one of the fans is not spinning, i thinks its messed up. but the system wont turn on long enough for me to disable that feature in the BIOS... you think gettin a new CPU fan should help? or is there somethin else that can do it? is there a way to bypass that whole CPU fan shutting my pc down setting?
     
  5. Taurus

    Taurus hardware monkey

    Messages:
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    Location:
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    try clearing the cmos. do this by turning off the power supply, changing the cmos jumper, pressing the power button on the case a few times, changing the jumper back, and turning the power supply back on. should give you default bios settings and you might be able to get in.

    otherwise find another fan and plug it into the "cpu_fan" header on the mobo so it detects a spinning fan.
     
  6. LeeJend

    LeeJend Moderator

    Messages:
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    Location:
    Fort Worth, TX
    You don't need to power up the system to clear cmos and should not it can cause the bios to erase.

    With power off Just move the cmos jumper to the other two pins for a minute then put it back. After that turn on the power supply.

    If the CPU FAN is not spinning then DON'T turn on the system. You could fry the CPU in less than a minute.
     
  7. ghettorare

    ghettorare Guest

    ^^ but you think that could be the problem on why it dont turn on? that one of the fan's not workin?
     
  8. Taurus

    Taurus hardware monkey

    Messages:
    3,206
    Location:
    Sacramento, CA
    i just gave my little cmos-clearing walkthough because i've encountered some boards where simply moving the jumper won't do it. with those, i would have to turn off the PS (so no more power is being fed to the capcitors), move the jumper, press the power button a few times (to clear out any remaining power from the capacitors) and put the jumper back and turn her back on.

    but yes, with most you should be able to simply move the cmos jumper over for a second then back to it's original position.
    it's possible. if there isn't a fan plugged into the cup_fan header or it's not spinning, that could cause the board to automatically shut down once it's powered up. it's a safety feature.
     
  9. ghettorare

    ghettorare Guest

    i got it a new fan still givin me the same ol, i'ma try that jumper power thing.