This is annoying, when I leave my PC on for a decent time, then I can't play any music or listen shit, when I am about to play Winamp there is an error telling me I don't have a sound card at all, seriously what.

Also in a certain period of time my keyboard shuffles up many characters like the exclamation marks, parenthesis, etc.; making me unable to right click too.

Any idea?

6yuytyuuyukyuet

That happens to me sometimes. Just shut down and restart.

And as for the keyboard, check your settings.