For some reason my HD Icon that is always up in the top right corner is missing. Also, all my files and photos are missing. I have no idea what happened to them. Would anyone be able to advise me on this? --- Post Merged, Apr 12, 2016 --- Also can't open my trash or reboot the computer. It is a Mac OS X Version 10.6.3 2 GHz Intel Core 2 Duo 1 GB 667 MHz DDR2 SDRAM --- Post Merged, Apr 12, 2016 --- I just realized I can't quit firefox either. Not even force quit.