Strange mobo/power/booting problem

Discussion in 'Hardware' started by olv, 11 Feb 2004.

  1. olv

    olv he's so bright

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    A few days ago my dads pc just started acting up.

    It would turn on but wouldn't boot. all fans spun up, hard drive light showed constant activity but the board wouldn't post. reset cmos enabled it to boot correctly but when shutting down, it would go into a sort of half power state. windows had finished shutting down and that was fine but power remained going through, all fans spun slowly and power cord had to pulled up. it'd do this sometimes when it booted. clearing cmos would allow it to boot but now its impossible to make it boot. i was pretty sure it was a psu problem because it was using an OLD 250watt psu which i thought had slowly died under the load but my dad replaced it with a 400w and still not success.
    Which leads me to believe it's a mobo problem.
    Another strange thing is that when the pc did actually boot the light on the sony cd-writer would constantly glow red. it read cds fine so i dont know why.

    Specs:

    Xp2000+
    Abit KD7-Raid
    2x256 Twinmos3200
    Matrox gfx
    1 dvd drive
    1 cd writer
    1 7200 rpm 20gig drive
    1 5400 rpm

    I'm gonna take it apart tomorrow and boot it with minimum parts and swap in bits with mine if neccassary.

    Any ideas as to what the problem could be?
    Thanks
     
    Last edited: 11 Feb 2004
  2. olv

    olv he's so bright

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    well an update for anyone that cares lol.

    I ran it as bare as possible, CPU - ram - gfx - hdd - cd - floppy and still the same problem. i think the mobo has gone but bigz said it could be the cpu aswell. annoying. i might try my cpu in it latter if i can be bothered lol.
     
  3. TMM

    TMM Modder

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    it sounds like CPU, HDD or mobo. mainly sounds like the mobo tho... do you have another athlon board you could test it on?

    if not before you go ripping out your vital parts, test the HDD in another comp ;)
     
  4. olv

    olv he's so bright

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    a broken hdd wouldn't case it not to post at all. the only spare stuff i have is in my current rig. so it's a lot of effort but i guess needs must.
     
  5. Tim S

    Tim S OG

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    I think it's either the processor or the motherboard... test the processor in another board and see what it does :)
     
  6. Kameleon

    Kameleon is watching you...

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    I think last time someone posted with this problem, I said 75% board, 15% CPU, 5% PSU, 5% something else totally random like the number of left-spinning quarks in your room is too low.

    Oh, and olv - email me about this NF7-S if you still want it, I've got it all packed up for ya ;) [/hijack]
     
  7. knifeXgunfight

    knifeXgunfight What's a Dremel?

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    i had the same problem a lil while ago. i run with windows xp. it was my hard drive. it completely corrupt. at first i thought it might have been a problem with my OS. i'm not sure if you're using XP or not, but i think F11 will put you into recovery mode before the POST. try that, and if that doesnt work, put another hard drive into it. and if i'm wrong, try a new mobo and cpu. hope things get better for you.

    nik :thumb:
     
  8. Kameleon

    Kameleon is watching you...

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    Umm, if the HDD is dead the computer will still POST - you can POST a computer with a board, PSU, RAM, CPU and GFX card. No, you don't even need a heatsink, though one is preferable unless you like that distinctive smell of core death ;)
     
  9. yodasarmpit

    yodasarmpit Modder

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    You are mixing up POST and BOOT
     
  10. olv

    olv he's so bright

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    some progress. the cpu isn't dead. i've got it in my pc now. which probably means its the mobo. hmmm strange. wonder why it died. :sigh:
     
  11. loply

    loply What's a Dremel?

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    What kind of mobo?

    The power components in mobos are quite prone to failure from my experience.

    Quite a high fault rate on mobos too.
     
  12. Tim S

    Tim S OG

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    you had a look at the caps and/or traces close to the mosfets? :)
     

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