Yesterday, while running Itunes and Safari, my iMac (purchased in Sept 2006), froze and I was forced to do manually shut it down. Upon restarting, I was greeted with the blinking question mark folder, and I then proceeded to start up again while holding the Option key. After holding the Option key, the Windows and OS X Drives did not appear as they normally would. I then inserted the OS X software disk to reinstall, and when I arrived at the step to select a destination volume, the window was completely empty. At this point it looks like my Imac can not access my hard drive, or it has some how been erased. I also posted this question on the Apple forums yesterday and tried the following remedies below to no avail: X = Boot to OS X on systems with dual boot Command+V = Starts your system in Verbose mode. (lists what is loading during startup, as opposed to the spinning icon with grey screen) Command+S = Single user mode (used for troubleshooting in most cases) Holding Shift Key upon start up FSCK mode Command+Option+P+R Zaps Parameter RAM (Note: Make sure to push this key combination directly after the startup chime, and hold the keys until you hear the startup chime again.) No matter what I try I always receive the blinking question folder (unless I hold Option key, then I get a blank blue screen). At this point it looks like taking it to Apple and paying them to service it is my only option, anyone else have any last second tips or ideas? Thanks! Note - I have resetted the VRAM as well with no luck.