Hi
Try this:
.
Disconnect AC
Shutdown
Remove battery
Connect AC
Startup
Open Device Manager
Click the plus (+) sign next to Batteries category, right-click All of the "Microsoft ACPI Compliant Control Method Battery" listings, and select Uninstall In the "Confirm Device Uninstall" dialog box, click OK. (it’s ok if you only have 1 of these listings).
Click the plus (+) sign next to System Devices.
Right-click the “ACPI Fixed Features Button" and select Uninstall. In the "Confirm Device Uninstall" dialog box, click OK.
Shutdown
Disconnect AC
Insert battery
Connect AC
Startup
Please update the Bios from HP.COM website
