I went from PC to Mac and was very happy with it until today. I was online at my shop and the entire computer hung up. Was on AOL, nothing major about it and nothing I haven't been on before. It would not restart and nothing worked. I had to turn it off with the button. When I turned it back on the apple comes up, and a dial that keeps turning and turning. It won't load, it will do nothing. I continue to get the apple and that is as far as it goes. I went online to see what to do and they tell me I need to start up with a disk. Problem is, I bought a brand new MacBook Pro that came with no disk. I tried Command R and it says everything is fine. Any suggestions????