So my mothers MacBook won't boot. I've tried several things I found on Google but nothing solved the real problem. Everything I know is that it's not a hardware failure because if I wipe the hard drive, install OS X again it boots with no problems. Only if i install the Time Capsule backup/ just get the files from the backup (without programs, files only) it doesn't boot anymore. A MB Air of a friend has the same Problem. Does somebody know what to do?