It sounds like you're experiencing a common issue with Windows 7 where the default audio driver is being switched to the generic High Definition Audio Device instead of the Realtek HD Audio driver you prefer. Here are a few steps you can take to try to resolve this issue: 1. Disable Automatic Driver Updates: - Even if you have set Windows Update to notify you before downloading updates, there might be instances where Windows still installs drivers automatically. To prevent this: - Go to Control Panel > System and Security > System. - Click on "Advanced system settings" on the left. - Navigate to the Hardware tab and click on "Device Installation Settings." - Choose "No, let me choose what to do" and then "Never install driver software from Windows Update." 2. Remove the High Definition Audio Device Driver: - You can try uninstalling the High Definition Audio Device driver from Device Manager: - Right-click on the Start button and select Device Manager. - Expand the "Sound, video, and game controllers" section. - Right-click on the High Definition Audio Device and select "Uninstall device." - Check the box that says "Delete the driver software for this device" and then click Uninstall. 3. Prevent Windows from Updating the Driver Manually: - After uninstalling the High Definition Audio Device, you can try preventing Windows from reinstalling it: - Open Device Manager again. - Right-click on your sound card and choose "Properties." - Go to the "Driver" tab and click on "Update Driver." - Select "Browse my computer for driver software" and then "Let me pick from a list of device drivers on my computer." - Choose the Realtek HD Audio driver from the list and click Next. 4. Disable Realtek Driver Auto Installation: - You can try disabling Realtek Driver Auto Installation feature if it's causing conflicts with the High Definition Audio Device: - Search for Realtek HD Audio Manager and open it. - Go to the folder icon and uncheck "Enable auto popup dialog when device has been plugged in" and "Enable auto popup dialog when a device has been unplugged." - Save the changes and restart your computer. By following these steps, you can hopefully maintain the Realtek HD Audio driver as the default one without it being automatically switched back to the High Definition Audio Device driver. If the issue persists, you may need to consider updating or reinstalling the Realtek HD Audio driver manually from the manufacturer's website.
