I've effed up an installation of at least two software on my Mac. XAMPP and MAMP. I'm pretty sure those two shouldn't mix.
Anyway, if all else fails, is there a way to restore my MacBook to factory conditions without erasing all the files in here, and without using a disc or something? No, I was not foresighted enough to set a Time Machine backup or anything.
Windows 8 has a Refresh option - refreshes the OS, keeps the files. I wonder if Mac has something similar?
P.S. My MacBook Pro is 13 inch, Mid 2012 version.