Sound for computer works at start up but then stops...?

Upon starting up my computer the sound works fine for about a few seconds but then once I want to start playing games or listening to music or videos the sound doesn't work.That computer has windows XP.I am not sure what I can do to fix the problem.Can someone help me please lol?

?2010-11-25T15:20:17Z

Favorite Answer

[win 7 & Vista]
well you might have disabled the audio device.. goto my computer right click it.. and click properties

then device manager
.
then right click any program and scan for hardwae changes..

and update whatever might be wrong...

.. or right click your speaker on the right hand side of your computer and click playback devices if win 7 or vista.. and enable any device that has been disabled..

for xp is something similar just look for the driver of your audio and try to update it..

download a program called speccy from pirisoft.com
and let it run and see if it detects any audio driver or card hope it helps..!!