[SOLVED] Why do i have to keep restarting my computer

[fusionbeats14]

When I am using my computer for internet purposes and wanting to listen to music I have to restart my computer because no sound will come out of the speakers . same thing if I am on youtube as well

 

[musical marv]

When I am using my computer for internet purposes and wanting to listen to music I have to restart my computer because no sound will come out of the speakers . same thing if I am on youtube as well

Try iTunes and see what happens than.Did you mute this by accident?