My Lenovo T400 battery will not charge?

AC works fine. I took battery inside and out, cleaned the dust, etc. Still will not take a charge. Have also tried the reset and always in vain. I read somewhere about uninstalling driver and re - install an update and how it may work sometimes. How could I do this on a T400 safely and where could I find the new driver? Thank you

It the battery is older than a year, that's probably a failure.  replace a driver should not make a difference.

Tags: Windows

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