heatsink fan spins on boot then stops

wtf11111

Honorable
Jan 31, 2014
2
0
10,510
Hi all,

I removed the heatsink from my lenovo T61 yesterday and replaced the thermal paste on the CPU & GPU. After I reassembled everything, the heatsink fan would only spin for a fraction of a second on boot and stop. Then I downloaded TpFanControl. On the mode setting, if I choose BIOS (embedded controller) or Smart (TPFanControl.ini), on the 'SPEED' section, it would display 'Off', but if I choose the manual mode and key the number from 1-7, the fan would run. It seems like the fan can run manually, but what has lead to this and what are the possible solutions to fix this problem? Thanks for you time!
 

wtf11111

Honorable
Jan 31, 2014
2
0
10,510


Hi Casey, I tried to open multiple youtube videos and flash games at the same time where the temperature would reach up to 6- and the fan will still not run. The fan used to spin even around 40. thanks