My cpu cant clock my fan

[Hardware noob]

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

 

[simon12]

What CPU & fan do you have? Why do you think its the problem?

 

[mfree]

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.

 

[satyamdubey]

the fan slows down but still keeps spinning?