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Motherboard no post

Discussion in 'PC Hardware' started by wyobison, 2010/07/14.

  1. 2010/07/14
    wyobison

    wyobison Inactive Thread Starter

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    I have a very old computer I am working. It has XP. No post from motherboard. I am assuming it is a motherboard issue. I tested the CMOS battery-fine. Removed the ram and started the computer no beep indicating missing ram. So I thought it must be the motherboard. Just for the fun of it I reseated the CPU and the computer started right up. Shut down the computer and turned it back on and back to no startup...no beeps. So I am back to thinking it is a bad motherboard. I just think it is odd that I did get the computer to startup after reseating the CPU. Does anyone have any other thoughts.
    Thanks
     
    wyobison,
    #1
  2. 2010/07/14
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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    When you say you reseated the CPU - did you renew the heat transfer tape/paste? Are fans working and LED's showing when you push the start button? Neil.
     
    retiredlearner,
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  4. 2010/07/15
    wyobison

    wyobison Inactive Thread Starter

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    Yes I put new paste on. All the fans are working. Harddrive spins up. LED light on the motherboard works. Last night I put a different CPU in and same thing...the computer would work on the first turn on but when I turned it back off and on again it would not boot up.
     
    wyobison,
    #3
  5. 2010/07/15
    PeteC

    PeteC SuperGeek Staff

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    Longish shot, but have you checked the capacitors for bulging or leaking?
     
    PeteC,
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  6. 2010/07/15
    wyobison

    wyobison Inactive Thread Starter

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    Yes, everything looks fine on the motherboard
     
    wyobison,
    #5
  7. 2010/07/15
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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    When you boot up the second time - do all the lights and fans work? I would suspect the PSU as I had a bit of fun with one recently, changed the PSU and all was smooth again.
    The fans sounded like a surging current flow until the comp had booted fully. Only a suggestion as electrics can be funny. Neil.
     
    retiredlearner,
    #6
  8. 2010/07/15
    wyobison

    wyobison Inactive Thread Starter

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    All lights come on. I did switch out the PSU. No difference.
     
    wyobison,
    #7
  9. 2010/07/15
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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    Have you tried cable connections or replaced IDE cables? I don't know whether you're using SATA but cleaning cable connections or swapping them is about your last resort before condemning that M/B. Renewing/updating drivers is another thought. Neil.
     
    retiredlearner,
    #8
  10. 2010/07/16
    hawk22

    hawk22 Geek Member

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    I still have a sneaking suspicion on bad ram. Have you tested with different ram, take the ram out blow out the connectors and clean the ram modules the gold connectors with a eraser in an up and down motion (not sideway) and then give them a blow as well.
     
    hawk22,
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  11. 2010/07/16
    PeteC

    PeteC SuperGeek Staff

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    Can you get into the BIOS ? the lack of beeps mentioned in your first post may be significant - unless the connections to the case speaker are faulty/missing.
     
    PeteC,
    #10
  12. 2010/07/16
    wyobison

    wyobison Inactive Thread Starter

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    I tried replacing the ram. The only time I could get into the bios was the one time after reseating the CPU. I did hear beeps after reseating the CPU. But after a restart it would not beep or startup again. I have not done anything with the cables. I will give that a try.
     
    wyobison,
    #11
  13. 2010/07/16
    PeteC

    PeteC SuperGeek Staff

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    The BIOS is looking suspicious - some BIOS's are plug in chips - if that is the case it might be worth reseating it - if you dare :)
     
    PeteC,
    #12
  14. 2010/07/16
    wyobison

    wyobison Inactive Thread Starter

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    OK I dared. I figured I couldnt do much more damage to this computer. Reseated the bios chip. No difference.
     
    Last edited: 2010/07/16
    wyobison,
    #13
  15. 2010/07/16
    wyobison

    wyobison Inactive Thread Starter

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    Removed the cables and ram from the motherboard. No beeps indicating missing ram.
     
    wyobison,
    #14

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