Re: nVidia Optimus Questions
1. If you have a 540M. You have Optimus. End of story.
2. Asus laptops do not have a BIOS switch but they do have a mux that can be accessed using byo/asus/vga-switcheroo.
3. AMD laptops have an OPTIONAL BIOS switch for Forced Mode. Otherwise they have no switch and are stuck in Dynamic Mode.