I've had my mini for a couple years. Lately, it seemed to be working slower so I started thinking about the possibility that it had memory issues, but I'm not technically savvy enough to really know what to do. Then, before I did anything, it quit working with my router and reconfigured the desktop to eliminate my screen image. Next thing, when I attempted to save a Word document to my desktop, it said I didn't have enough space (but I was able to save to a memory stick via the USB port). Then, it locked up on me. I couldn't do anything, so I shut it off and rebooted. Now, nothing comes up except the apple logo and the rotating circle indicating that something is loading. But, no matter how long I wait, it goes not further. I can't get to my desktop, nothing. Does anyone have any idea what's going on and what I can do?