Recently went into Apple with my early 2011 MacBook Pro, was told that my hard drive was broken. So I decided to replace it myself with a Samsung 850 EVO, all went okay, but now when I turn it on all I get is a file with a question mark in it.
I couldn't upload anything to the SSD before installing as my Mac wasn't working at all and had a white screen with a spinning wheel. I had no new operating system on my Mac as I hadn't updated it in a while. A CD came with the drive but my laptop is having none of it it just turns on to a white screen with the mouse on it.
As you can see I'm not very technical so if any responses could be dulled down a bit that would be helpful!