may require manual installation of the Conexant High Definition Audio driver originally built for Vista. Usage Tips for Windows 8.1 Finding Compaq Presario C767TU drivers

. If your WiFi isn't working, the Atheros driver version 9.2.0.444 is widely recommended for legacy compatibility. Sound drivers for the

For "Unknown Devices" in your Device Manager, you can search for the Hardware ID on DriverIdentifier to find matching Windows 8.1 compatible files. Key Hardware Drivers

Common adapters for this model include , Broadcom , and Intel PRO/Wireless 3945ABG