Windows 10’s Video for Windows (VfW) and WDM architecture has evolved. Many legacy capture cards produce a black screen or “Device Not Found” error inside Honestech TVR 3.0 even if Windows Device Manager detects the hardware.
: Right-click the speaker icon in your system tray, open sound settings, and go to the Recording tab. Ensure your USB capture audio device is enabled and set as the default communication device. "Product Key / Serial Number Missing" Honestech Tvr 3.0 For Windows 10