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CPU fan starts turning for half second then stops at start up


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#1
x308

x308

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Did the jumper trick, still no luck, fans start then shut down. New PSU also.


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#2
RKinner

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Is this a new install or have you had the heatsink off the CPU?  Sounds like the CPU is getting too hot so it just shuts down.  Could  also be something is shorting out the power and the power supply is crowbarriing.


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#3
x308

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Not a new install, unit was running for about 5years. Replaced the power supply and a different motherboard. Still the cpu fan shuts down after a second and it never boots up. The motherboard is a Asus P5GC-MX mTX.


Edited by x308, 06 January 2016 - 08:52 PM.

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#4
RKinner

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You changed the MoBo & PS after the problem occurred?  IF you moved the CPU did you clean it and put on new thermal paste?  Did you have to rewire the fan?  Perhaps the speed sensor wire has gotten disconnected?  Or is not working on the fan.  

Have you disconnected the drives and removed any non essential cards?  Pulled the RAM?   


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