Sound not working! Help!

[Loosehead]

My computer will not do sound! I have checked everywhere I know, I have checked the mute boxes I have checked the volume settings. I am at a loss, It doesn't work for head phones or speakers, any ideas anyone? It was fine so I think it's just an option somewhere help!

[alunrw]

could it be the Sound card has become faulty ? had a similar problem a year or so ago and had to replace the card ? alternatively, if you're on XP have you tried restoring to a date prior to this loss of sound occurring?

[peanut]

Check the plug on the back of the computer where the speakers are connected and be sure it is fully plugged in. if it is partially pullled out, it will stop everything from working.