If you have audio drivers installed but still no sound:
If you have external speakers
Are they connected properly to the computer? If they need power are they plugged in? Are they turned on?
Is the sound device disabled?
A. On the desktop, right-click the speaker icon on your taskbar
B. Select "Playback Devices"
C. In the white empty space right click and select both Show Disconnected/Disabled Devices
D. Do you see icons for your speakers and headphones now?
E. If you now see it you may need to right click on the correct sound device and select "Set as default device"
Low Volume:
There are many different places to adjust the sound. Are all of these turned up?
1. Knob on the speakers, or if you have a laptop there might be a sound adjustment nob somewhere.
2. On the program you are using to play music/video.
3. Next to the clock on the bottom right of the screen there is usually a sound icon you can click. Also, right click the volume icon and click Open Volume Mixer.
If the audio drivers still don't work, try reinstalling them in compatibility mode.
Troubleshoot Compatibility
This can help with some (but not all) programs/drivers:
1) Uninstall the program if it's already installed. Then when you install/reinstall it instead of double clicking on the install file right click it and select "Troubleshoot Compatibility"
2) Then click "Try Recommended Settings" and in the next windows click "Start the Program" to install it.
3) After it installs see if it works correctly. Please note - some programs may not be able to run in Windows 8.
