About two months ago, I was on a strange Website that seemed to be "refusing" to let me log off of it. The site kept spamming me with its splash page plus other pages. This would all settle down, but restart when I tried logging off. As a result, when the pages again "settled" I simply tried quitting out of Internet Explorer. At this point, the computer crashed, froze. Then, in frustration, I cut off the power and planned to log on again after a minute or so. (I had encountered this problem before, so what could such a big deal, eh?) When I tried restarting the iMac, I instead encountered a question-mark icon as opposed to the usual Mac O/S icon. The machine also made a clicking noise. Initially, I installed Norton Utilities and at least determined that my hard drive appeared OK; all the files I tried to open appeared fine. But I could not boot up the machine independently. A few days later, when I got the time, I called a couple of area Apple stores and both told me that the diagnostic alone would run $80. And, after that, I would have to pay for whatever was required to fix the machine. They could not, of course, give me any ballpark figures, but the one time I previously had to have my iMac repaired cost around $300. By my description of the problem, can any Mac enthusiasts give me an idea what I may be experiencing and how much it may cost to be repaired? A new computer is out of the question; my current machine must be repaired or I am out of business for at least six months (or more). Any ideas?