1. Open the disk of your system and go to Windows-system32-Driverstore-FileRepository and find the wdmaudio.inf_x86_neutral_aed2a4456700dfde folder inside.
2. Right click on the point administrator to take ownership;
3, then enter (wdmaudio.inf_x86_neutral_aed2a4456700dfde) folder to delete all the things inside;
4, download windows7 sound card driver repair compression package;
5, extract windows7 sound card Driver repair compression package;
6, copy and paste all the files inside the wdmaudio.inf…… folder;
7, re-install the sound card driver (note to find your own model Drive oh);
8, restart the computer, the problem is solved.
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