The AVerMedia M791 PCIe Combo NTSC ATSC is an internal TV tuner card designed to receive analog NTSC and digital ATSC television signals. Its driver lets Windows communicate with the card so compatible TV viewing and recording software can access its tuner functions. For Windows 11, 10, 8, or 7, check the individual driver package’s compatibility before installing, as support can vary between releases.

Key Features

• Hardware detection: Helps Windows identify the AVerMedia tuner card and load the components required for communication over its PCIe connection.
• NTSC and ATSC tuner access: Allows compatible applications to use the card’s analog and digital reception capabilities, depending on the connected signal source and available broadcasts.
• TV viewing and recording support: Provides the driver interface needed by supported TV software to receive content for playback or recording. A separate viewing application may be required.
• Device configuration: Makes driver information and device status available through Windows Device Manager, helping you verify installation and investigate detection issues.

How to Install

1. Confirm the hardware and Windows version. Verify that your card is the AVerMedia M791 PCIe Combo NTSC ATSC. Check your Windows edition and whether the system is 32-bit or 64-bit, then select a driver package that explicitly supports that configuration. Do not assume a Windows 7 package will work on Windows 10 or Windows 11.

1. Prepare the tuner card. If the card is not already installed, shut down the computer, disconnect power, and follow the card’s installation instructions to fit it into a suitable PCIe slot. Connect the appropriate antenna or supported television signal source.

1. Extract and install the driver. Unpack the downloaded archive if necessary. Run the included setup program with administrator permissions and follow its prompts. If there is no installer, open Device Manager, locate the tuner or unidentified multimedia device, choose Update driver, and browse to the extracted driver folder.

1. Restart and verify detection. Restart Windows if prompted, then check Device Manager for warning symbols. If installation fails, confirm that the package matches the card and operating system rather than forcing an incompatible driver.

1. Configure your TV application. Open compatible viewing software, select the tuner, choose the appropriate signal type, and scan for channels. Available channels depend on local broadcasts, reception quality, and your signal connection.

Common Issues and Fixes

• Install fails or setup exits early: Run the AVerMedia installer as Administrator, close Media Center/AVerMedia apps, and temporarily disable antivirus. If Windows blocks the older driver, use compatibility mode for the supported Windows version, then reboot.
• Device not detected: Power off, reseat the M791 in its PCIe slot, and try another slot. Check Device Manager for an unknown/multimedia device; if present, update manually via “Browse my computer” to the extracted driver folder.
• Version conflicts after Windows Update: Remove conflicting generic drivers, install the AVerMedia M791 package matching your Windows build, and block automatic driver replacement. Reinstall the tuner software and rescan ATSC/NTSC channels if tuning fails.