OK..here's the solution. I had reverted the BIOS back to an earlier version and so the Ctrl X didn't work. As soon as I updated the BIOS to the latest version again...the Ctrl X worked. Battery is now fully charged! WOOHOO
Hello! After changing the MOBO and battery THREE TIMES...I knew there had to be something else. My Dell 17 5765 laptop will NOT charge the battery more than 60% There is an article here on the DELL site about how to reset the bios but nothing seems to happen.   That article says to enter the BIOS and do Ctrl X and then Ctrl Alt Del. I even installed 3 different BIOS versions   Thank you in advance for any suggestions.
Battery won't charge more than 60% Inspiron 17 5765