@avicennaa77
As I understand the Bang & Olufsen Audio Control Panel isn't turning on anymore,
Don't worry as I'll be glad to help, however, to provide an accurate resolution, I need a few more details:
Did you attempt to reinstall the software?
If you haven't, please remove the software and try downloading and reinstalling the Realtek HD Audio software package on the following link - this should also reinstall the B&o guide:
http://ftp.hp.com/pub/softpaq/sp80501-81000/sp80538.exe
When the re-installation has completed,
restart the notebook.
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