Open Device Manager , right-click the unidentified multimedia controller, choose Properties > Details > Hardware IDs . Look for strings matching: PCI\VEN_1797&DEV_6802 PCI\VEN_1797&DEV_6801 PCI\VEN_1797&DEV_6805 Step-by-Step Installation Process for Windows 7 64-Bit
Comprehensive Guide: Techwell TW6802B Driver for Windows 7 64-Bit Hot Fix dvr card techwell tw6802b driver for win 7 64 bit hot
Find the "Multimedia Video Controller" with a yellow exclamation mark. Right-click and select Update Driver Software "Browse my computer for driver software" Open Device Manager
Standard PCI or early PCI-Express bridging boards Target OS: Windows 7 64-Bit (x64 Architecture) right-click the unidentified multimedia controller