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My cpu cant clock my fan

Last response: in CPUs
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January 30, 2013 10:19:22 AM

Hello, I recently bought a new computer (or more accurately all the components for a computer).
But the problem is that when i turn it on the fan runs at normal speed for a few seconds then slows down making the computer not start up.

A friend told me that the cpu could't clock the fan and i could solve this by turning it off and on again and letting it run for a minute. But it didnt help :( 

Thank you in advance for the help

More about : cpu clock fan

a c 100 à CPUs
January 30, 2013 10:28:39 AM

What CPU & fan do you have? Why do you think its the problem?
January 30, 2013 10:29:26 AM

A quick thought on this - modern motherboards often have numerous fan headers on them. Are you sure that the cpu fan is connected to the cpu fan header - there is 1 specifically marked up for this purpose and most mobo will not allow the bios to execute if there is no fan attached to this header.
a b à CPUs
January 30, 2013 10:41:07 AM

the fan slows down but still keeps spinning?
!