On Sat, 17 Jan 2009 12:57:01 -0500, Kenneth thoughfully wrote:

> Howdy,
>
> I have a Win2000 box in our home.
>
> My son often uses it.
>
> Yesterday, I wanted to use it to view something on Youtube, but was
> surprised to discover that I had no sound.
>
> As I checked the sound settings (expecting to find the output muted), my
> son said "Dad, after a while, the sound always stops. It will come back
> if you log me off, and then log on again."
>
> I tried it, and, of course, he was correct...
>
> It appears that for any user, after about fifteen minutes, the sound
> will shut down.
>
> Logging on as another user fixes the sound, as does logging off, then
> logging on as the original user.
>
> What might be causing this sort of thing, and how can I correct this
> nuisance?
>
> Many thanks,

When was the last time you defragged the drive, deleted temporary and
internet files, ran a registry cleaner and scanned the HD?

Shutdown and restart the PC see if that fixes anything, look for sound
errors in the Events Viewer and run Task Manager to watch resource
utilizations when running YouTube, assuming YouTube video continues to
play while the sound disappears.