Thanks Herve! I am using the MacBook Air 6,2 profile and have created an SSDT with pikeralpha's script, soo all good there. I don't have bluetooth since I am using a DW1510 wlan card for native WiFi. Re the MacBook Air 6,2 profile - I have an i7-4600u CPU with an Intel HD4400 and a 1366x768 screen. Would you recommend any better system definition, or is the 6,2 the best for me? One thing I am noticing is that my GPU is stuck at 350Hz, whereas it should be at 200, no? Maybe that makes a difference? Thank you again for the fast reply!