Hi All, I am in need of a little help please for one or all of you guru's. This is a problem I have been trying to resolve myself for about a month now, I don't want to take my computer into the shop because it has sensitive information on it. I would really appreciate any information or advice as I think I have covered all bases. Hardware - iMac G4 Problem: When turning on my iMac it chimes, goes to the grey/white screen with the apple symbol, about 5 - 10 seconds later the gear starts turning, it then hangs in this state for about 2 minutes with gear turning before turning off and starting all over again. Suspected Problem: I have had similar problems before when using Target Disk mode to boot into a different partition as I am running a Windows partition seperatly, however by holding the keyboard Command or Option key I have been able to regain control and boot back into the Mac Partition which works fine. Therefore I suspect this is some kind of hard-disk failure. Attempted Resolutions I have tried all the command prompts I could find using the keyboard, i.e the PRAM reset, CD Boot, Target Disk Mode using external laptop etc. I think I tried at least 7 or 8 different key combinations with no success, it doesn't even acknowledge that I have given it any input. The only thing that it did respond to was when I held down the mouse button it ejected the CD, other than that no input at all can be made. I've tried plugging the keyboard into another computer to test it, it worked fine with full control as per normal. I opened up the cover and had a look inside, couldn't see any abnormalities, I removed the battery for 10 minutes and re-installed it jut for good measure, as I remembered when I had a PC it used to reset a few things. I also vacuumed out any dust in the USB ports. Any help appreciated.