Hi
I found this on another forum, the second one worked for the poster...
Open an elevated (Admin) command prompt. Copy/paste this command then press enter:
net start audiosrv
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If that doesn't work, try this.
1. Open cmd.exe with Administrator rights
2. Paste in:
"secedit /configure /cfg %windir%\inf\defltbase.inf /db defltbase.sdb /verbose"
(probably without the quotes but if that doesn't work try it with the quotes).
3. Restart your computer when the process completes