I computer doesn't seem to play any sound at all. One day I was defragmenting and the next day no sounds comes out. I've tried using headphones and my speakers and nothing. My volume isn't on mute -.-. Any help is appreciated.

Did you plug in an output device such as speakers?

[quote author=UserLoser link=topic=13094.msg131928#msg131928 date=1130278595]
Did you plug in an output device such as speakers?
[/quote]

Of course but why would it matter since I am not getting sound through my headphones either.

Have you tried getting a new sound driver?

[quote author=Disco link=topic=13094.msg131930#msg131930 date=1130278896]
Have you tried getting a new sound driver?
[/quote]

I am actually installing a new sound driver soon..98% done..

Your sound card (onboard sound?) is probably lacking drivers and/or broken.

Happened to me on my last computer, my onboard soundcard crapped out one day.  I bought a $25 sound card from newegg and it has worked for the last two years.