No sound on pc

hey, my computer isnt playing any sound
i had installed windows xp service pack 3
the sound was still working after that
but then the sound stopped working and i got a message saying that there’s something wrong with my sound device and that i don’t have an audio mixer installed anymore.

so can somebody please help fix this.
it’d be great if my sound gets working again.

What is your CPU & Motherboard? My guess is that you have to download & install your Audio Driver.

have you installed or uninstalled any codecs recently?

wierd thing just happened
i turn on my computer and it says it was updated and my sound works now
well w/e, at least it works now

sounds like drivers?