Issue 1: "This INF contains no driver information for your device"
Issue 2: Audio is not working via the internal AUX cable
Issue 3: Blue screen (BSOD) after sleep mode
If you're unable to find a compatible driver, consider reaching out to Avermedia's customer support directly. They may have more specific advice or a newer driver available that wasn't listed on their website.
is a specialized USB TV tuner designed to receive digital TV signals (specifically the ISDB-Tb standard used in regions like Brazil). If you are running an older system on Windows 7 64-bit, finding the correct driver is essential for the device to perform channel scanning and video playback correctly. Download Link & Version Details Driver Avermedia A857 Windows 7 64 Bits LINK
Since this is a legacy device, the drivers are often found through hardware partners like Positivo or specialized driver databases: Driver Version: 12.6.64.16 Operating System: Windows 7 (64-bit)
Official Compatibility: Confirmed for Windows 7 Professional and Ultimate editions
Download Link: You can find the specific 64-bit installer on DriverIdentifier or via Driver Scape. Step-by-Step Installation Guide
Download the Driver: Use one of the links above to download the .zip or .cab file containing the driver. Connect the Hardware: Plug your AVerMedia A857 tuner into a high-speed USB port. Manual Installation: Open Device Manager on your Windows 7 PC. Issue 1: "This INF contains no driver information
Locate the "Unknown Device" (it may appear under "Other devices" with a yellow exclamation mark). Right-click the device and select Update Driver Software.
Choose "Browse my computer for driver software" and point to the folder where you extracted the downloaded files.
Confirm Hardware IDs: To ensure you have the right match, the device should show the following ID in the "Details" tab: USB\VID_07CA&PID_A857. Troubleshooting Tips
Check Bit-Version: Ensure you specifically download the 64-bit version (often labeled x64), as the 32-bit (x86) driver will not work on your system. OEM Variants: Many Issue 2: Audio is not working via the internal AUX cable
tuners were bundled with Positivo laptops and desktops. If the generic driver fails, looking specifically for the Positivo-branded driver package often resolves compatibility issues.
Signal Issues: Once the driver is installed, you will need compatible TV software (like Windows Media Center or AVerMedia's own TV Utility) to scan for channels.
Even with the correct LINK, you may encounter problems. Here is how to fix them.
If you own the AVerMedia A857 TV tuner/capture device and need a working driver for Windows 7 64-bit, this short guide walks you through where to find the correct driver, how to install it, and troubleshooting tips to get your device working reliably.
Published: October 2023
Reading Time: 6 minutes
Even if the specific "Consumer" page is gone, AverMedia usually keeps drivers in their professional/support sections.