the notebook battery is not charging or the notebook does not indicate
that the battery is charging, the most likely scenario is that the
battery itself is operating correctly, but its power management
software may have become corrupt. In order to correct the problem, you
will need to uninstall and reinstall the power management software by
using the Device Manager. This document will explain how to uninstall
and reinstall the ACPI Battery listings in Windows Vista, as well as
how to obtain and install updated BIOS files, if needed to correct
other battery issues.
Uninstalling and reinstalling power management software in Windows Vista
In order to correct problems with the battery's power management software, follow the steps below.
in the search field, then select
Under the Batteries category, right-click the
Microsoft ACPI Compliant Control Method Battery
listing, and select
Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver.
On the Device Manager taskbar, click
Scan for hardware changes
Action > Scan for hardware changes
will scan your computer for hardware that doesn't have drivers
installed, and will install the drivers needed to manage your battery's
power. The notebook should now indicate that the battery is charging.
you have gotten stuck at other power levels, so trying powering it down
with AC adapater and battery in, remove battery and then put in back
in, see if charge light will come on steady.