Hi. I have a problem with an intel iMac. The computer has been working great until tonight. Something strange was happening. We started it up, and the HD was making a "clunking" sound while using itunes, and then the color wheel came up and we had to restart the computer by holding down the power button. When we started it back up, we hear the "clunking", then the ding, and then we get a grey screen with an image of a file with a question mark. We can't click anything, and it just stays on the gray screen with that blinking image of a folder. A quick response would be greatly appreciated, as it's my girlfriend calling me over the phone about it. Help!!!!! EDIT: Okay, we MIGHT still have this problem, so ANY help would be appreciated. I had her put in the disc that came with the iMac, and had her do the hold c key thing. But we didnt really do anything with it. I had her exit the installer because I don't have a Mac in front of me and I didn't want to mess up her computer more. So, we restarted the computer, and it started up okay and we got to the desktop. But if we can have a permanent solution to this it would be awesome. It's her first mac, and I've really built up the whole experience for her, and I'd feel kinda stupid if this iMac turns out to be a lemon.