I have an iMac (bought 2006) running Tiger which has worked fine, although seems to have been slower recently. Turned it off before the weekend as we were all away, and now it will not reboot. On attempting to restart, I get the start-up musical 'ta-Dah', but then get an ominous sounding ticking, usually in groups of three, and finally a light grey screen with a flashing darker grey file icon containing a question mark (?) (with no more ticking) I have tried a reboot holding the apple key, and a reboot holding the 'S' key (as suggested on different threads) I still have the initial Mac OS X install disc and have tried booting with this in. I then get the bitten apple and #installer runs, but after agreeing to the license, it demands that I select a destination volume for the install, but doesn't give mae any options, and the continue button remains 'greyed out' Is this a dead Hard disk?, if so, what can I do about it. I might be able to 'reclaim' a Mac mini (also 2006) from my son, who, I think, has gone back to a PC (why you ask) although he is no longer local. Could the mini use the screen of the iMac (and if so how) I confess I am computer (PC) semi-illiterate, and know even less about Macs so may need some basic help Thanks.