Finding the correct driver for the AVerMedia A857 (USB Pure ISDB-Tb)
on Windows 7 64-bit can be tricky since it's an older device, often bundled with specific laptop brands like Positivo or Lenovo. Recommended Driver Links
Since the official AVerMedia global site primarily lists newer capture cards, you may need to use archived or third-party repositories. Below are the most reliable options for Windows 7 64-bit: Lenovo Official Support
: Lenovo hosts a verified AVerMedia TV Tuner driver compatible with Windows 7 (both 32-bit and 64-bit). You can download it directly from the Lenovo Support Portal DriverScape (Version 12.6.0.16)
: This site provides the specific driver files for the A857 model. You can find the 64-bit version on the AVerMedia A857 Download Page DriverIdentifier (OEM Specific)
: If you are using this device on a Positivo laptop, specialized driver versions for models like the C14CR21TV are available on DriverIdentifier Driver Details 12.6.64.16 (Latest 64-bit release) or 12.6.0.16. Release Date: Approximately April 2015. File Name: Often labeled as aver857.inf or contained within a Manual Installation Steps If the installer doesn't run automatically on Windows 7: Device Manager
Locate the device (it might appear as "Unknown Device" or "USB Pure ISDB-Tb"). Right-click and select Update Driver Software Browse my computer for driver software
and point it to the folder where you extracted the downloaded files. Important Note on Compatibility
While these drivers are designed for Windows 7, some users have successfully used them on Windows 10/11 by running the installer in Compatibility Mode or manually pointing the Device Manager to the Windows 7 for a manual installation?
You can download the AVerMedia A857 (Volar Green HD) driver for Windows 7 (64-bit) from several verified hardware support sites, as the product is no longer actively hosted on the main AVerMedia homepage. ⬇️ Download Links
Lenovo Support (Official Host): You can download the AVerMedia TV Tuner Driver which specifically supports the A857 hardware ID on Windows 7 64-bit systems.
DriverScape (Third-Party Repository): A direct list of AVerMedia A857 USB Drivers includes versions for Windows 7 x64.
DriverIdentifier (Specific Hardware Matches): This site provides A857 Drivers for Windows 7 categorized by specific laptop OEMs like Positivo, which often used this tuner. 🛠️ Installation Tips
Compatibility Mode: If the installer fails, right-click the .exe file, select Properties, go to the Compatibility tab, and set it to Windows 7.
Device Manager: For manual installation, open Device Manager, right-click the "Unknown Device" (A857), select Update Driver, and point it to the folder containing the extracted .inf files.
Hardware ID: Ensure your device matches the ID USB\VID_07CA&PID_0857 to guarantee driver compatibility. 📺 Common Software Alternatives Driver Avermedia A857 Windows 7 64 Bits LINK
Since the original AVerMedia software can be buggy on modern Windows 7 updates, many users prefer these alternatives once the driver is installed: NextPVR: A popular, lightweight DVR application.
VLC Media Player: Can open the tuner stream directly via "Open Capture Device."
Windows Media Center: Fully supports the A857 natively on Windows 7 once the driver is active.
To help you get set up, are you having trouble with Windows not recognizing the device, or AVerMedia TV Tuner Driver - Windows 7 (64-bit)
Finding the correct driver for the AVerMedia A857 USB Pure ISDB-Tb tuner on Windows 7 64-bit can be tricky since the hardware is often bundled with specific laptop brands like Positivo or Lenovo. Primary Download Sources
Depending on your specific hardware ID, you can use these verified repositories:
DriverIdentifier (Version 12.6.64.16): This is one of the most recent 64-bit builds available, released in April 2015. It is highly compatible with Windows 7, 8, and 10. Download AVerMedia A857 Driver
Lenovo Support (Version 8.18 MB): Lenovo provides a stable, "Recommended" driver package for Windows 7 (both 32-bit and 64-bit), originally released for their bundled systems. Download from Lenovo Support
Driver Scape: Offers multiple versions including the USB Pure ISDB-Tb specific variant. Driver Scape Download Page Key Technical Specifications Driver Version: Commonly 12.6.64.16 or 12.6.0.2. Hardware ID: Often identified as USB\VID_07ca&PID_a857.
Compatibility: Strictly supports Windows 7 x64 along with backward/forward compatibility for Vista through Windows 10. Installation Best Practices
To ensure the driver installs correctly without errors, follow these steps: Support | Download - AVerMedia
Blog Title: Retro Revival: Installing the Avermedia A857 on Windows 7 64-bit (The Last Working Driver)
Posted by: TechRetro Labs Date: April 12, 2026
If you are still holding onto a classic Avermedia A857 PCI-E TV Tuner card—perhaps for capturing composite video from an old VCR, playing retro consoles, or watching analog TV via an RF signal—you have likely hit the infamous "Driver Wall."
Officially, Avermedia stopped supporting this card years ago. The CDs that shipped with the card only contain 32-bit drivers. If you try to install them on a modern (or even a legacy) Windows 7 64-bit machine, Windows will throw a frustrating error: “This driver is not signed” or “Driver not found.” Finding the correct driver for the AVerMedia A857
But don’t throw that card away yet. I have found the last known working driver package for Windows 7 64-bit.
When searching for "Driver Avermedia A857 Windows 7 64 Bits LINK", you will see ads for tools like:
These are dangerous for three reasons:
The Rule: For legacy hardware (2010 and earlier), the only safe source is the original manufacturer’s archive or a community repository with checksums.
Because these drivers are not officially WHQL signed for 64-bit Windows, you must disable Driver Signature Enforcement temporarily. Follow these steps precisely:
Step 1: Disable Driver Signature Enforcement
Step 2: Extract the Drivers
C:\A857_Drivers).Step 3: Manual Installation via Device Manager
Win + R, type devmgmt.msc, and hit Enter.AVer850_x64.INF.Step 4: Reboot Restart your PC normally (do not press F8 this time). The driver will remain loaded.
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.
AVerMedia A857 (also known as the AVerMedia USB Pure ISDB-Tb
) is a digital TV tuner commonly found in laptops like Positivo and Lenovo. To get it working on Windows 7 64-bit
, you generally need to use drivers provided by the laptop manufacturer or specialized driver repositories, as it is an older model. Direct Download Links Lenovo Support : You can download the official AVerMedia TV Tuner Driver for Windows 7 (64-bit) which was released as a recommended update. DriverScape : This repository offers a specific AVerMedia A857 USB Pure ISDB-Tb driver for Windows 7, 8.1, and 10. DriverIdentifier
: This site lists several versions of the driver, specifically for users with Positivo hardware (e.g., DH3BU01TV models Device Specifications Hardware IDs USB\VID_07CA&PID_A857 USB\VID_07CA&PID_0857 Latest Known Driver Version : 12.6.64.16 (Released April 2, 2015).
: Sound, video, and game controller for digital TV reception. Installation Tips Check Hardware ID Blog Title: Retro Revival: Installing the Avermedia A857
: Open Device Manager, right-click the "Unknown Device," and select Properties > Details > Hardware IDs to ensure it matches the strings above. Manual Update
: If the installer fails, try extracting the driver files (often in
format) and manually updating through Device Manager by selecting "Browse my computer for driver software". Compatibility
To get your AVerMedia A857 (USB Pure ISDB-Tb) working on Windows 7 64-bit, you can use the following resources. Note that this specific model was often bundled with laptops like Positivo, so OEM-specific drivers are frequently the most compatible. Direct Driver Links
DriverIdentifier (Recommended for A857): This site hosts several versions specifically for the
model. Look for version 12.6.64.16 or 12.6.64.7, which are verified for Windows 7 64-bit. Download A857 Driver for Windows 7 64-bit
Lenovo Support: While branded for Lenovo, their TV tuner drivers often use the same AVerMedia chips and work on generic installs. AVerMedia TV Tuner Driver (Win 7 64-bit)
AVerMedia Official (Professional Catalog): For advanced users, AVerMedia provides a Professional Support Portal with generic 64-bit drivers (Version 8.0.64.41) that support Windows 7. AVerMedia TV Tuner Driver - Windows 7 (64-bit)
Struggling to find a working driver for your Avermedia A857 capture card on Windows 7 64-bit? You are not alone.
The Avermedia A857 (often labeled as the “DarkCrystal HD Capture Station” or internally as the “C027”) is a classic piece of hardware. Released during the Windows Vista/7 era, this PCIe capture card is loved by retro PC gamers and archivists for its ability to capture uncompressed HDMI and component video. However, finding a legitimate Driver Avermedia A857 Windows 7 64 Bits LINK that actually works in 2025 can feel like hunting for a ghost.
Most official links are long dead, and third-party driver sites are riddled with malware. This article provides the only safe, step-by-step guide to getting your A857 running on Windows 7 64-bit.
Published: October 2023
Reading Time: 6 minutes
Before we give you the LINK, let’s understand the problem. Avermedia officially ended support for the A857 (C027) after Windows 8. When Windows 10 and 11 introduced stricter driver signing (WDM / Kernel security), Avermedia chose not to update the legacy C027 drivers.
Consequently, the official Avermedia website no longer lists the A857 in its "Legacy Products" section. The original driver CD that shipped with the card is for Windows Vista/7 32-bit. For Windows 7 64-bit, you need a specific signed driver version that was released in a narrow window between 2010 and 2013.