Problems with Mac

Over the past few months there have been a few problems whiles using mac, because other student come into the media suite and switch between Mac and windows the PC will burn out and crash, thus leading to the PC tec having to wipe  the PC whole.
Because of this everything I had edited had been taken of my main PC, but lucky I had my footage left on the camera i was using, so in my spear time and during my media lessons i would sit down and upload everything then re-edit. The picture below is what I first found out that everything on my desktop.