After I cleaned up its wings (I do it every several times a year), my (Fujitsu Lifebook ah530-10) laptop's Cpu fan stopped spinning when windows 10 start. It does spin while in BIOS pages and also until windows is loaded.
BIOS fan control is set to "normal" (options are quiet/normal).
SpeedFan reporting 50%-100% speed and 70-90C degrees.
Shorting the yellow wire to the red or black didnt make it spin.
Feeding 5V to the red wire and grounding the black makes it spin at full speed, so currently I`m using external power adapter to make it work.
Can it be a fan fault? (I already ordered a new one) The cpu temperature measures seems accurate in SpeedFan.