code 10 on the audio device and i'm stuck.

USB Audio Device Properties
Device status:
This device cannot start. (Code 10)
{Operation Failed}
The requested operation was unsuccessful.
it started after waking from sleep. my laptop used to have perfectly normal sound. now there's a red X on the speaker icon and Sound settings says no output devices found ;) I've reinstalled HD ALC 880 Audio CODECs from teh Realtek page twice. same error. is there a deeper reset I'm missing, or a log that says why it can't start?? pls help 馃檹
