How to install HD Audio/Video driver)

The installation process is as follows:

1. Enter safe mode (otherwise the corresponding driver file will be restored automatically );
2. Go to c: \ windows \ system32 \ drivers and delete hdaudio. sys and hdaudio. sys (if there are other hda headers, delete these two );
3. Enter the Device Manager. Disable and then enable "Microsoft uaa bus driver for high definition audio" (some Chinese characters may exist on the system device, probably Microsoft HD drive uaa for high definition audio ), at this time, the device will enter a yellow exclamation point "! "; Right-click "Microsoft uaa bus driver for high definition audio" and delete it. Then, the HD bus driver of the system is deleted successfully, deleting a bus is equivalent to deleting it );
4. Restart and return to the normal mode. If you are familiar with the "discover new hardware" screen, you will be back. Cancel all of them first, and then install the driver of the corresponding system version RealTek HD sound card. At last, there will be no conflict.
5. The installation is successful, restart, and the system audio icon is displayed. The audio is played normally.

[IfProgramThe driver is automatically installed at startup ]:
1. Enter the Device Manager. Directly uninstall the two "high definition audio controllers" under "system devices ".
2. Go to c: \ windows \ system32 \ drivers and delete hdaudio. sys and hdaudio. sys.
3. Install the sound card driver and restart the system.

Note: For Lenovo laptop to install Windows 7, the operation is different. After step 4 is completed (after the new driver is successfully installed), the sound card still has no sound. In this case, you can manually update the driver of "Device Manager> sound, video and game controller> high definition audio. After completion, the sound card will work normally.