Wow.. what the hell.
This is like the ultimate april fools thing right here.. sadly, it isn't april fools.
When did this start to happen? Right after installing the audio driver?
If I was you, I'd do a backup of everything on the hard drive, use the BackTrack program and yank it off the hidden partition. Make sure you have nothing else running as you do it and revert your system back to factory. Hopefully it'll fix it.
I can only assume that Optimus got damaged somehow and now is trying to use the Intel GPU and the NVidia in some retarded SLI ':f
Doubt it's a hardware issue. Possibly just the BIOS doesn't know what GPU to use. Could do a reflash? ;x
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