Thinkpads Forum

Sometimes when the battery icon shows that the power is decreasing I plug the AC Adapter in. However, even after I do this it doesn't switch to ac supply. I thought that the adapter might be unstable so I got a new one. However after plugging the new one in there was no change.
What could be causing this problem? Could it be a virus?
Thanks

I had the exact same problem.
you kneed a new motherboard

Thanks for the help

Check the power connector if it is rocky stable. No moves in any direction. Or take it into the service and try there another AC.

Check this http://forum.thinkpads.com/viewtopic.php?t=14370