and boot from the OS X installation CD or the CD's that came with it.
If it does not boot from the CD, let us know.
Perform an Archive and Install and all should revert to normal again.
All your data will be preserved.
Do NOT do a FORMAT and Install, all your data will be lost.
Yup it is plugged in. My emac will appear to be booting up just fine (make all of the healthy noises) but then will stay at the page with the apple and the spinning wheel for as long as an hour. I have followed the advice that came with my users guide (to hold down option while turning on and a few more things) but nothing has worked. I have turned it off and on and still the same thing. I'm using mac OSX and I had a usb device plugged in when this first happened.Any help would be greatly appreciated. Thank you!