Lenovo G770 Fan not spinning up after resume from sleep or hibernate

Hi guys,
     My lenovo G770 is facing an issue where when ever I resume the system from either sleep mode or hibernate, the fan does not spin up, as a result I have to either restart the system or open the system, pull the wire of the fan and put it back in the power socket.
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Go to Solution.

Hey Abdul,
Welcome back.   If the fan runs normally on first boot until you suspend / resume, then I might imagine this is power management quirk, or something confused in the embedded controller.
1) Try going into BIOS and reload defaults - this might refresh values there.   
2) Try uninstall / reinstall power management driver and the energy cut software (Idea power manager).
Did you recently update BIOS or drivers?
I would also try some temp monitoring software just to see how CPU temps run after you come back from sleep to see if the fan should be running.
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
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