: Click Start , type device manager , and expand Sound, video and game controllers .
: If the device is listed as "Unknown," right-click it, go to Properties > Details , and select Hardware Ids from the dropdown. Copy the string (e.g., VEN_10EC&DEV_0887 ) into a search engine to find the exact model. 2. Common Windows 7 Audio Drivers
Most Windows 7 systems use one of the following major brands:
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