iMac dv won't complete startup
After attempting to install updates i believe 10.2.4, it required a reboot but system just gets to the Apple logo screen and the timer wheel keeps spinning. I have left it in this state for hours never completes. I have tried all sorts of key start-up combinations: s, command-s, shift, cmd+shift+del+opt, v, spacebar, cmd+opt+o+f. never gets past apple logo.
i don't have OS disks. any ideas would be welcome.
thanks in advance.
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