I use Sleep mode in Vista and on rare occasions (about 2 out of ten times -
no pattern seen so far) I would lose sound after the PC wakes up. All
indications, including those in Device Manager, show normal. I restart the PC
and I regain sound again. If I use hibernate mode instead of Sleep mode, this
never occurs. I like Sleep mode better as it's a lot quicker to wake up.

In event viewer I noticed an error correlating with the time the wake up
occurred when sound didn't come on. I've attached two images from the event
viewer - links below.

1. http://img355.imageshack.us/img355/8342/ev1nu4.jpg

2. http://img355.imageshack.us/img355/3549/ev2ni3.jpg

Can anyone decipher the meaning of this error? I'd love to be able to
eliminate losing sound on wake-up.