39 I've tried everything, is there something else that might fix the problem?
After trying all of the above solutions, there are still two things to try:
A) Turn off (or on) software/hardware acceleration
Go into the Sounds and Audio Devices applet.
Click on the "Audio" tab at the top of the applet. (This should show three sections: Sound Playback, Sound Recording, and MIDI)
Click on the "Advanced" button in the Sound Playback section of the tab. (This should open an Advanced Audio Properties box showing the speaker configuration)
Click on the "Performance" tab at the top of the Advanced Audio Properties box.
Change the "Hardware acceleration" to either "None" or "Full".
Restart the computer and see if the problem still occurs.