So today my late 2009 iMac 21.5" iMac fell from my desk and the glass fell off. I managed to put it back on as it is magnetic but when i tried using it it froze and both keyboard and mouse didn't work with the computer. I turned it off manually and once I booted again I didn't get past the apple logo for about 15 minutes. It then changed to the "#" or "no"symbol. Any help as to what is going on? Can it be fixed? And will I lose my files? Thanks!