17" iMac (Tiger) won't boot after latest software update

I downloaded the latest Tiger software update on my 17" Intel Core Duo iMac a couple of days ago and after I hit Restart I can't get past the grey Apple loading screen.
I've tried everything it tells me in the manual, pressing various combinations of keys as I turn the computer on, but to no avail. I also put Install Disk 1 in and tried to check hardware from that (pressing D) and tried pressing C too to boot from it, but nothing happens, just the grey apple loading screen. Of course, now the install disk is stuck in there too.
Any clues as to how I can sort this out? I'm still under AppleCare, so if worst comes to worst I'll call UK support and see what they can do, but thought I'd try everything I could at home first.
TIA.

Hello,
Try the Apple Hardware Test: http://support.apple.com/kb/HT1509
Carolyn

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Carolyn Samit
Posts: 8,431
From: Alameda CA Bay Farm Island
Registered: Aug 5, 2005
Re: G4 wont boot after latest security upgrade
Posted: May 22, 2009 2:51 PM in response to: voiletmay
Click to reply to this topic Reply email Email
HI,
Ok... you need to boot from your install disk.
Insert Installer disk and Restart, holding down the "C" key until grey Apple appears.
Go to Installer menu (Panther and earlier) or Utilities menu (Tiger and later) and launch Disk Utility.
Select your HDD (manufacturer ID) in the left panel.
Select First Aid in the Main panel.
(Check S.M.A.R.T Status of HDD at the bottom of right panel. It should say: Verified)
Click Repair Disk on the bottom right.
If DU reports disk does not need repairs quit DU and restart.
If DU reports errors Repair again and again until DU reports disk is repaired.
If you cannot boot from your install disk, try booting in Safe Mode
Resolve startup issues and perform disk maintenance with Disk Utility and fsck
If you have the original hard drive in this iBook, it was probably a 60GB drive? When you can do this, check to see how much available disk space there is.
Right or control click the MacintoshHD icon on your Desktop, then click: Get Info. In the Get Info window, click the discovery triangle so it's facing down. You will see; Capacity and Available Make sure you have 10% available disk space, 15% is better. Not enough available drive space can cause issues like you are experiencing.
Carolyn "
I tried restarting it after the repair (there were some things to repair and I tried to repair twice just to make sure it didn't miss anything) but it still won't load. It says its starting the OX system, but when the blue bar reaches the end, it doesn't do anything from there. I also left it on for hours and it did nothing. My mousepad still lets me move around the mouse, the caps lock key still lights up, as the num lock key. I tried safe mode but that won't load either...any other suggestions?

*" I also left it on for hours and it did nothing. "*
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Message was edited by: Donny Paulling
Message was edited by: Donny Paulling

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