To resolve the error, you typically need to install the software designed for your specific model and Windows 7 64-bit. 1. Official Lenovo Support Site (Recommended) The safest way to get the driver is directly from Lenovo: Go to the Lenovo Support Website .
Open regedit , navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\ Look for a key named VPC2004 or LaunchManager – should exist if loaded. acpi vpc2004 driver windows 7 64bit