Hi there I have the above that was working fine until I powered off one night and now it wont turn on. If i try to boot it I get the apple logo then the status line. It takes an age to work through this, and then the screen goes blank. I did some searching and tried a couple of commands like safe mode etc. But still no joy. I also took the back off and reseated the SSD memory chip and no change. So a few questions: 1.Any other checks or any ideas to try and get this to boot. Someone mentioned using a thunderbolt cable from another mac (I have a mac mini) to boot? 2. It looks like I need to buy a new SSD - any suggestions where? 3. If I do replace the SSD how do i get the OS back on, how do I get the machine to boot if no partitions? 4. I think it backed up to my apple router/HD, any way of checking this? Any other advice would be much appreciated please? Thanks in advance.