And, what do you mean by " 'display only' is repairable, possibly with little effort"? Thank you very much !!
LousyFool is saying that the iMac is a computer easy to repair, at least with hard disk problems. However, you can't replace the hard disk yourself or you will avoid the warranty, so if the iMac is in warranty, you should take it to an Apple Store. If it's not in warranty, you can try to do it yourself
Sorry, hit Add Reply too soon...
stanleyoowa, your friend should boot the Mac from the original OS X system disk that came with the Mac, then use Disk utility to check the internal HDD. Maybe it's not entirely gone but can be repaired. Eventually, it must be formatted newly and the OS re-installed. Only worst case a new HDD is due.
With the Mac being from 2009, there will be neither warranty no AppleCare anymore, so DIY might be in order in that worst case. There are instructions on the web. In any case, it being a 27" iMac, I find it sad to 'degrade' it to a 'display only' function...
Message was edited by: LousyFool