Hi, I've had my iMac (the newest model out) for about 8 months now, with 10.6.7. I installed Boot Camp Windows Vista about 1 month ago. I haven't had any problems since. Now, starting after a "required update upon restart" on the Vista's end, I cannot log into my Mac OSX. First, it was a grey bar under the apple logo, now it sits at the grey loading screen with the apple logo forever without any bar. I have tried Safe Mode, nothing. I have tried to boot from my install Disk. Nothing. No recognition of DVD or buttons pressed. I have tried to single user log into to access command files. Same as above. I have hard booted it, unplugging, replugging, nothing. Interestingly enough, I can hold down the option key and select which HD I want to load onto (Mac or Windows), and Windows will load just fine and handy and dandy...but not my OSX, which contains the most important files... What should I do now? Thank you.