You're running Windows or Linux? You have problems in Windows or Linux?
In Linux - there's no "Realtek HD Manager", check a thread about pulseaudio in this forum.
In Windows - what does Device Manager say about your audio device?
As for BIOS - if you're dualbooting, you've probably disabled Secure BIOS, which prevents the updater to work. I'll let someone with similar laptop to share an experience.