Hi,
Please try these steps:
- Disconnect AC (Charger),
- Shutdown the machine,
- Remove battery,
- Connect AC,
- Reboot the machine,
- Open Decive Manager,
- Under the Batteries category, right-click all of the ACPI Compliant Control Method Batterylistings, and select Uninstall,
- Shutdown the machine,
- Disconnect AC,
- Insert battery,
- Connect AC,
- Reboot the machime.
Good luck.