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S.O.S CPU Fan/Overheating Problem

Discussion in 'PC hardware help' started by claire13, Feb 10, 2007.

  1. claire13

    claire13 Member

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    Long story:
    * Brand spaking new home theatre setup - asrock 775dualvsta motherboard, p4 3.2 cpu, 1gb ddr, 430w coolermaster psu. Put it all together with no problems.
    * Plugged it in, booted up, looking good. Turned off after a couple of minutes. So I took it all out and put it back together again. This time it lasted half way through the OS install before it turned off.
    * So I go into the bios and realise that *SOMETIMES* the CPU fan doesn't turn on. I do the usual - reseat the 4-pin cable, redo the thermal paste, put it all back together so carefully. And it all worked beautifully for a good week or so.
    * But today its doing the same thing again, turns on and the CPU fan works for 10 seconds then stops. I'll leave the system off for an hour, then try again and it'll work for an hour or so then turn itself off! Its very temperamental.

    Before I rush out and buy a new CPU heat sink and fan, I just wanted to see if anybody else had any other ideas? Is it possible I'll have the same problem (i.e could it be the 4-pin connector on the motherboard?!).

    Any suggestions would be appreciated! I'd really just like to enjoy my new media centre before the technology is end of life! :(
     
  2. ddp

    ddp Moderator Staff Member

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    try the fan connector on the chassis or psu fan connector if it reaches to see if still does it.
     
  3. claire13

    claire13 Member

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    hey thanks for the reply

    unfortunately its a 4-pin fan connector and i've only got the one on the motherboard
     
  4. ddp

    ddp Moderator Staff Member

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    you might be able to get an adapter for the fan that connects to a hd power connector for power & motherboard so can read rpm.
     
  5. claire13

    claire13 Member

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    Thanks, I did look for a connector to try to connect it straight to the power supply (thinking maybe the power supply was the culprit). There are plenty out there for 3-pin but unfortunately none for 4-pin fans.

    Do you think its the motherboard not getting enough power then?
     
  6. ddp

    ddp Moderator Staff Member

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    do you have both power connectors from psu into motherboard connected?
     
  7. claire13

    claire13 Member

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    Yes I have two plugged in
     
  8. ddp

    ddp Moderator Staff Member

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    what is the wattage of the psu?
     
  9. claire13

    claire13 Member

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  10. ddp

    ddp Moderator Staff Member

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    so is either motherboard connector or fan itself that is causing the problem. is the heatsink fan assembly stock with cpu or bought seperately?
     
  11. claire13

    claire13 Member

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    Its the standard one that came with the CPU

    Its all brand new stuff, but would be a bit of a hassle. It would actually be less of a hassle just to buy a $25 heat sink and fan....
     
  12. ddp

    ddp Moderator Staff Member

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    that's what i think too. just make certan it has same connector as present 1.
     
  13. claire13

    claire13 Member

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    Will try that, thanks for your help
     
  14. ddp

    ddp Moderator Staff Member

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    no problem, teach & learn
     

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