08-02-2014 04:48 PM
I recently downgraded my G500s from Windows 8 to Windows 7, and I've yet to find a Windows 7 compatible "Lenovo Power Management" driver (main problem is non-functional brightness control hotkeys - though volume control hotkeys are also non-functional)
A yellow exclamation marked "Unknown device" appears under Device Manager, with Id's "ACPI\VPC2004" and "*VPC2004". I've tried multiple versions of the Lenovo Power Management driver, and while they do make the device manager exclamation mark disappear, none seem to restore these hotkeys functions.
Any help would be greatly apprectiated!
08-04-2014 03:36 PM