Acpi Msft0101 Lenovo Driver Windows 7 64 Bit

Troubleshoot Unknown Device Microsoft ACPI-Compliant System

Common Causes and Solutions

If you encounter an unknown device labeled "Microsoft ACPI-Compliant System" in your Device Manager, the issue could be related to the Advanced Configuration and Power Management Interface (ACPI) driver. Here are some troubleshooting steps to resolve this problem:

Windows 7 64-bit

1. Run the Microsoft ACPIMSFT0101 hotfix if applicable.
2. Try installing the latest AMD HDMI audio driver.

Windows 7 32-bit

1. Since there is no official 32-bit driver for this device, consider switching to Windows 7 64-bit and installing the available ACPI driver.
2. If switching to Windows 7 64-bit is not an option, you can try uninstalling the device and restarting your PC. Windows may automatically install a generic driver that provides basic functionality.

Other Considerations

• Ensure that your BIOS is running in UEFI mode if you are using Windows 7 x64 or Windows 10.
• The device is automatically supported in Windows 8 and Windows 10.

Additional Notes

The ACPI driver is responsible for power management and Plug and Play device enumeration. If the correct driver is not installed, the device may not function properly or may be recognized as an unknown device.

If you have tried the troubleshooting steps above and the problem persists, it is recommended to seek professional assistance from a qualified technician or contact the device manufacturer for further support.