Sound Output Device is not installed

[Guest]

My brother took my computer to his friends house and rebotted the whole
computer. My sound was working perfectly before and now I can't hear anything
from my speakers or headphones. When I went to check Volume Control it game
me a message saying:
There are no active mixer devices available. To install mixer devices go to
Control panel, click Printers and other hardware, and then click add hardware.
When I went it gave me no help at all. So My computer thinks I have no Audio
output when I have speakers plugged in and my sound card connected to the
mother board. What Do I do?

 

[Bob I]

Get out the CD with the drivers on it for the PC, and install the sound
drivers.

 

[bryan.tartcart]

The problem is your Windows Audio service is stopped. If you are
running XP just click start - run - type services.msc and hit enter.
Scroll down to Windows Audio and right click on it and click start.

Bryan