Windows7 sound card driver is not complete how to do

In the first step, you can perform a simple check. For example, if the audio power supply and connection are normal, whether the front or rear interface of the chassis is normal. If everything is ok, then you can proceed to the next step.
Step 2, open “Device Manager", view the "sound, video and game controller" directory. Usually, you will find that the device is not displaying properly. As shown below, Realtek High Definition Audio is normal, but the ATI HDMI Audio column is marked with a yellow exclamation mark.

The third step, open the driver wizard, it is recommended to download the latest driver wizard 2011 Beta 2. Check out the “Multimedia Devices” under “Driver Updates” and a complete list of drivers that can be updated. As shown below, Realtek 昱 HDMI audio driver version 2.55; Realtek 昱 昱 HD Audio audio driver version 2.57.

Step 4, download and install the new driver provided by the driver wizard. After restarting the system, all problems will be solved.

The reason why the above problem occurs is because the driver provided by Windows 7 after the sound card is recognized by default is not complete, and the HDMI part is missing. In case of such problems, just use the driver wizard to detect and install the complete sound card driver!