Hi, i recently updated my 2011 macbook pro and now the sleep light indicator isnt working when i close the lid, it used to respond but it just doesnt do anything now. i should add everything else is working normal. The only other thing i have added recently is install a carbon fiber skin? is there a sensor anywhere that the skin is blocking? i tried resetting the SMC but i dont know if i am doing it right, should i get any reaction from the mbp? its doing my head in at the moment as i just dont know how it can randomly stop.