1.Click Start and type device in the search field, then select Device Manager .
2.Expand the Batteries category.
3.Under the Batteries category, right-click the Microsoft ACPI Compliant Control Method Battery listing, and select Uninstall .
WARNING: Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver.
4.On the Device Manager taskbar, click Scan for hardware changes.
Alternately, select Action > Scan for hardware changes .