Driver Avermedia A857 Windows 7 64 Bits Link ((exclusive)) [ Works 100% ]
Unplug the USB tuner before starting the installation.
Locate the Setup.exe or Install.exe file within the extracted driver folder. Right-click the file and select Follow the on-screen prompts provided by the AVerMedia installation wizard. 4. Connect the Hardware Driver Avermedia A857 Windows 7 64 Bits LINK
This site hosts several versions specifically for the Unplug the USB tuner before starting the installation