12-29-2016 07:47 PM
Z40-70 bought in 2014. Bought replacement adapter in Aug. 2016. Worked fine for four months. For last 3 weeks, on start up, home screen displays pop-up: "The power adapter is not adapted to the computer and cannot supply power," showing me a hotlink to Buy a new one.
The adapter does charge the battery when the computer is turned off, but will not work while the computer is turned on.
The adapter appears identical to the original. There is one variation in the model number:
Original model #: ADLX65NCC3A
Repl. model #: ADLX65NDC3A
12-29-2016 08:00 PM
Try uninstalling/reinstalling the Lenovo Energy/Power Management software and drivers, and see if that resolves the error.