✅ After disabling signature enforcement once, the driver will remain installed and functional through future reboots.

Finding an official source for the drivers is difficult as the manufacturer's site is often unreachable. Most functional downloads are hosted on third-party driver repositories or community forums.

This usually means the driver didn't "stick." Go back to Device Manager and ensure there isn't a yellow exclamation mark.

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After the driver shows as "Working Properly" in Device Manager, install the TV Home Media 3 application.