Device Manager > right-click your PC name (top of the list) > Add legacy hardware .
Open Device Manager (as above).
Go to the Details tab.
In Device Manager, right-click the problematic audio device and select Properties . how to install sound drivers in windows 7
After reboot, Windows 7 will automatically detect the missing hardware and attempt to reinstall the driver using its built-in cache. If it installs the generic "High Definition Audio Device," follow Method 2 or 3 to get the real driver. Method 5: The Legacy Hardware Wizard (For Old or Unusual Cards) Some vintage sound cards (Sound Blaster Live!, Audigy, older C-Media chips) need this method. Device Manager > right-click your PC name (top