CPU Fan stopped spinning

[lcicciotti10]

Hey! So my CPU fan which is the fan the cpu cooler came with (Be quiet! Rock 4) made this whine sound then stopped spinning then it started, and then I restarted my computer and it seems to be spinning just fine now. is this bad? do I need to replace the CPU fan?

 

[Calvin7]

No, PWM (Pulse Width Modulation) fans operate according to a temperature range. If the temp is low enough the fan will stop running until the temp rises.

 

[lcicciotti10]

No, PWM (Pulse Width Modulation) fans operate according to a temperature range. If the temp is low enough the fan will stop running until the temp rises.

Ok thanks! But is the whine noise it makes normal? Or could it be my gpu?