The screen locker is broken and unlocking is not possible

well, so you have a problem… the laptop doesnt detect any harddrives (you tried with 2), reseting also didnt helped, so dont know what else to try… try checking for some guides on how to reset CMOS on Lenovo… that may also help… also check if there is a bios update available and if lenove supports direct update from bios

Got it. I’ll give that a shot and see what happens, and will give you an update once I figure out what’s going on.

Thank you very much for your help so far.