My macbook has a problem. The fans do NOT turn on! ITs a fully funcitonal macbook and i noticed it turns off after about 10-15 minutes, and will not turn back on for about 10-15 mins. It turns out that when i took apart they keyboard the fan does not turn on! I swapped it with a working fan and it still doesn't turn on

It only spins for 3 seconds then stops when you first boot the computer and thats about it! Is there a problem somewhere?