The AVerMedia A857 (often recognized as the AVerTV Volar 700 or part of the Volar series) is a legacy USB TV tuner known for its reliability in capturing digital broadcasts. However, as software environments have moved toward Windows 10 and 11, finding a stable Windows 7 64-bit driver link can be a challenge.
This guide provides the necessary information to get your device up and running on your 64-bit system. Why the AVerMedia A857 Needs Specific Drivers
The A857 chipset was designed during the transition between Windows Vista and Windows 7. Because it is a 64-bit operating system, Windows 7 requires "Signed Drivers." A standard 32-bit driver will not work and will likely result in a "Device Not Recognized" error in your Device Manager. Official Driver Details Device Name: AVerMedia A857 (Volar 700/HD)
Supported OS: Windows 7 (64-bit), Windows Vista (64-bit), Windows XP File Format: .EXE (Installer) or .ZIP (Manual Driver) Where to Find the Driver Link
While AVerMedia has archived many of its older product pages, you can still obtain the driver through the following methods:
The AVerMedia Support FTP/Archive:Visit the official AVerMedia Global Support site. Navigate to the "Discontinued" or "Archive" section. Look for the Volar Series or specifically the A857 model.
Microsoft Update Catalog:Search the Microsoft Update Catalog for "AVerMedia A857." Microsoft often hosts the basic driver INF files for Windows 7 64-bit that allow the hardware to communicate with third-party software like Windows Media Center or VLC.
Third-Party Repositories:If the official site is down, reputable driver databases like DriverGuide or Softpedia often host the original AP6.0.x or Driver 1.x packages specifically for the A857. How to Install the Driver on Windows 7 64-Bit
Disconnect the Device: Unplug the USB tuner before starting the installation.
Download the Package: Ensure you have the file specifically labeled x64 or 64-bit.
Run as Administrator: Right-click the .exe file and select "Run as Administrator" to ensure the registry keys are written correctly. Driver Avermedia A857 Windows 7 64 Bits LINK
Plug and Play: Once the installer finishes, plug in the A857. Windows 7 should show a notification: "Installing device driver software" followed by "Your device is ready to use." Troubleshooting Common Issues
Driver Signature Error: If Windows 7 blocks the driver, you may need to restart your PC and press F8 repeatedly to enter the Advanced Boot Options, then select "Disable Driver Signature Enforcement."
No Channels Found: This is often a software issue rather than a driver issue. Ensure you are using AVerTV 6 or Windows Media Center and that your antenna has a clear line of sight to local broadcast towers. Alternative Software
If you have the driver installed but the original AVerMedia software won't run, the A857 is compatible with: ProgDVB: Excellent for digital TV standards. NextPVR: A modern alternative for recording live TV.
VLC Media Player: Use the "Open Capture Device" setting to stream directly from the tuner.
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
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. The AVerMedia A857 (often recognized as the AVerTV
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
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.
Guide: Installing Driver for Avermedia A857 on Windows 7 64-bit
Introduction: This guide provides step-by-step instructions for installing the driver for Avermedia A857 on a Windows 7 64-bit operating system. Avermedia A857 is a TV tuner device that allows you to watch and record TV on your computer. To ensure the device functions properly, you need to install the appropriate driver.
System Requirements:
Step 1: Downloading the Driver
Step 2: Installing the Driver
Step 3: Verifying the Installation
Step 4: Using Your Device
Troubleshooting Tips:
By following these steps, you should be able to successfully install the driver for your Avermedia A857 on a Windows 7 64-bit system and start enjoying TV on your computer.
If you are reading this because you plan to move to Windows 10 64-bit, stop. The official driver will not work on Windows 10 21H2 or newer. The Avermedia A857 is hardware-locked to Windows 7/8. For modern systems, consider the Avermedia Live Gamer HD 2 (GC570) or a USB capture device.
If the official download is hard to find:
Cause: IRQ conflict or corrupted registry. Fix: Move the card to a different PCI slot. On motherboards with multiple x16 slots, avoid the primary GPU slot.
devmgmt.msc, and press Enter).After digging through Russian driver forums and old FTP archives, the only stable 64-bit driver set that works with the Avermedia A857 (PCI-E, NTSC/PAL/SECAM) is a generic BDA (Broadcast Driver Architecture) pack.
>>> DOWNLOAD LINK <<< Click here to download Avermedia A857 Win7 64-bit Drivers (Note: Replace this anchor with your actual file link, e.g., your Google Drive or Dropbox URL) Windows 7 64-bit operating system Avermedia A857 TV
File details:
AVerMedia_A857_x64_Win7.zipWindows 7 64-bit rejects unsigned drivers by default. The A857 driver uses an old SHA-1 certificate, which Windows 7 will flag as untrusted unless you do this: