I guess I 'broke' it somehow by using a chinese usb 2.0 hub in various usb ports. Then after i unplugged it, the whole system turned off and would not turn back on. I tried power + keyboard combinations and nothing. So, I took out the HD to save the data, and didnt see anything unusual going on inside. Then I read about SMC reset. I did that and to my surprise, it turned on w/ Fans @ max speed, but no luck w/ anything else. No bootup sound (even w/ HD back in), no display, nothin.... So what type of repair or selling for parts am I looking at? Graphics card issue? or replace the entire logic board?