Hi, So about 3 months ago I broke the screen to my 2007 MacBook, I've now taken the hard drive out, put it in a USB enclosure and tried to boot it on a friend's 2010 MacBook pro. It's recognises the drive and as far as I'm aware the files are all there but when I come to boot it I've now been stuck on the apple logo screen with a loading wheel for the last hour! What should I do? Is it safe to turn it off? Is this normal? It's still running so a replay asap would be amazing thanks!