For Windows 8/8.1, there are no compatible Realtek AC97 Audio Drivers. But you can fix this issue by watching this tutorial.
Error : Red cross mark on volume icon on taskbar even after installing drivers. Exclamation mark on audio device in Device Manager.
1. First, download the file from the link given below :
Download Link 1 : http://bit.ly/1kRBv25
Download Link 2 : http://bit.ly/1fQVbUh
(Leave a comment, if the link is broken)
2. Extract these files…