If you reinstalled Windows from a SP3 disk this can cause sonud card to fail. If this is you, reload from the supplied disks and make sure everything works before you do updates.
I have just baught a knew desktop mesh computor but i cant get any sound from it it says on i have...
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I have just baught a knew desktop mesh computor but i cant get any sound from it it says on i have 5.1 sound deffination on it but still no sound