crwdns2934241:0crwdne2934241:0 Jack

crwdns2934249:0crwdne2934249:0:

Try Shift+Control+Option+Power (credit: http://osxdaily.com/2014/11/22/fix-macbook-pro-booting-black-screen/). This has worked for me in the past with a black screen on startup, and I think it might work for a white screen. Also, if I'm not mistaken, you can call Apple Support for free. You'd have to fact check me there, though...

crwdns2915684:0crwdne2915684:0:

open