"Broke the LCD data cable connection on the logic board."に関する回答How about trying to replace the display cable? I've found original pieces coming from Hong Kong (I just replaced my keyboard like that). http://www.ebay.com/sch/i.html?_trksid=p... hope this helps
"Dripped coffee on laptop, keyboard not working?"に関する回答I´d recommend you to try as you said, an external usb mouse and keyboard, if those work then it means the computer is still working and you may need to replace the keyboard and the trackpad.
"My laptop powers off after adapter is unplugged"に関する回答It happens often when the battery life is over. You may need to replace the battery with an iFix it guide or, in case you do not intend to, get it replaced by an Apple tech.