11-29-2011 04:44 PM
I received my T420 today. The power manager bar at the bottom of the screen shows that there is no battery remaining with a red X over the bar. The power manager indicates "Error Detected". I tried swapping out the battery from another T420 in the office that worked fine on the other computer. I receive the same error message. When I unplug AC power, the computer shortly dies.
Any idea what the problem is and how to fix it?
11-29-2011 06:32 PM
11-30-2011 07:40 AM
This is a link to a screenshot of my Power Manager. Like I said, its not just the Power Manager not recognizing the amount of charge on the battery, the battery itself will not charge when hooked into AC power and if I remove the battery with no AC power, the computer dies.
01-17-2012 09:59 AM
Just had this crop up on one of my T420's - was reported by a user yesterday. Just did ran the update of the power manager 20-30 minutes ago. The battery had a 57% charge when I swapped it with another T420 - and checks out as fine from the power manager - but the laptop immediately hibernates when disconnected from power. I did note there is a BIOS update available so that's my next step - any other users have this issue?
01-18-2012 03:45 PM
01-19-2012 11:32 AM
Thanks ExJamJus - No access to run Battery Reset - it acts like it's not even attached. As a result, can't run the BIOS update. Looks like this one will need a service call.
01-19-2012 03:38 PM