I have a unibody macbook (late 08 or early 09?). Up until recently it hasn't been used in over a year. I need it for work now and would like to use it in a closed clam shell and display out to an HDMI display. I can't get the macbook to detect any display regardless of what cable or adaptor i use. the adaptor and cables are good because i have tried them with my wifes macbook pro. I took it to the genius bar and the guy said i should reinstall leopard and see if that fixes the problem (it didn't) or buy a new macbook pro. So does anyone know of possible causes for this? I would like to update to snow leopard and add memory but i don't want to put the money in if this is a logic board issue. Thank you!