The Avermedia A857 is a 15-year-old chipset (TDA8275A + TDA8290), but on Windows 7 64-bit, using these BDA drivers, it still outputs a perfectly clean composite signal for retro gaming.
October 2023 Reading Time: 6 minutes
AVerMedia_A857_Drv_v1.0.0.18_Win7_x64.zip File Size: Approx. 8.2 MB Version: 1.0.0.18 Release Date: 2010
Download the .cab file directly from Microsoft’s secure servers. Step-by-Step Installation Guide for Windows 7 64-Bit Driver Avermedia A857 Windows 7 64 Bits LINK
tuner) requires a specific 64-bit USB host controller and device driver to function smoothly on Windows 7 systems.
Click "Browse," select the folder where you extracted the files, and click "Next."
A: Possibly with legacy VFW support, but you will get blue screens (BSOD) on modern hardware. Not recommended. The Avermedia A857 is a 15-year-old chipset (TDA8275A
The delivers clean composite and S-Video capture with minimal latency. For converting old family VHS tapes or running a legacy CCTV DVR, it is still excellent.
Windows 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:
Before initiating the download process, it is important to confirm that your hardware matches this specific model. The AVerMedia A857 is an internal hardware identifier for the AVerTV Volar HD Nano (Model A857). Step-by-Step Installation Guide for Windows 7 64-Bit tuner)
Locate the driver row explicitly listing and AMD64 (which denotes the 64-bit architecture).
If the driver works but your media software cannot scan any TV channels:
Acquire the official driver package tailored for Windows 7 64-bit. The safest source is always the legacy or archive section of the official AVerMedia support website. Avoid third-party "driver updater" software, as these tools often bundle malware or provide unstable generic drivers.