06-19-2016 03:24 PM
My mac book pro this happened before it will sound the boot up tone but there will be no picture on th e monitor I tryed 5-6 times to get it to boot up with the same thing happening every time could my p ram battery or graphics a card be dead
last time I took it in to geeksquad and they got it to boot up is there some secret thing they did to get it to boot up I do not know about
06-19-2016 08:34 PM
I am not a Mac Expert but the troubleshooting tips on this link: http://osxdaily.com/2014/11/22/fix-macbook-pro-booting-black-screen/
May be able to give you some insight as to why it's happening and how to fix it.