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David123
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Hi

This problem is really making me feel the blues!

I have a Power Mac G4 with Mac OS version 10.2.3. This has been working fine for me for over a year. 2 weeks ago for some inexplicable reason I decided to update this software. My mac is not connected to the internet so I downloaded the updates via my pc and burned them on to a cd. I then updated the mac from the cd. This is when my problems started. The upgrade installation did not complete and left the computer hanging. I tried to re-install from the original cd but it would not upgrade a newer version of the software (obviously duh!). I tried various other things but eventually decided to cut my losses and did a clean re-install of the os 10.2.3. It took 17 attempts and many blue screens before it installed. But I could not get past the blue screen.

That was 2 weeks ago. Yesterday I decided to try all over again, being very careful at every step. I wiped the disk and then did a clean install, but left out all the additional stuff like printer drivers, languages additional applications etc (it still took 3 attempts before it installed). But, guess what I still have the blue screen syndrome. When I boot up it goes through all its processes, looking like its loading up the firewall etc etc but then hangs on a blue screen, sometimes flickering a bit.

I have tried to boot up in Safe Mode but it just does the same.

I have removed all peripherals except the screen, mouse and keyboard (this was done before installing the os 10.2.3)

I have also tried all of the following:

Selecting the "Connect automatically when starting TCP/IP applications" option in Network preferences can sometimes cause this issue. You'll need to delete the preference file that holds this setting. This is an advanced step that will reset all of your computer's network settings. You will need to reconfigure them in Network preferences to reconnect to the Internet or a network.
Start up the computer in Single-User Mode.
Type: mount -uw /
Press Return.
Type one of the following:

(for Mac OS X 10.2.8 or earlier)
mv /var/db/SystemConfiguration/preferences.xml preferences.old

Press Return.
Type: reboot
Press Return.


If your computer still starts up to a blue screen, follow these steps.
Start up the computer in Single-User Mode.
Type: mount -uw /
Press Return.
Type:
mv /Library/Preferences/com.apple.loginwindow.plist preferences2.old

Tip: There is a space between ".plist" and "preferences".


Press Return.
Type:
mv /Library/Preferences/com.apple.windowserver.plist preferences3.old


Press Return.
Type: reboot
Press Return.


Reset certain privileges.
Start up the computer in Single-User Mode.
Check the volume with fsck.
Type: mount -uw /
Press Return.
Type: chmod 1775 /
Press Return.
Type: reboot
Press Return.

I tried to do this but could not work out how (I did not create a username):

Start up the computer in Single-User Mode.
Check the volume with fsck.
Press Return.
Type: mount -uw /
Press Return.
Type: cd /Users/[affected username]/Library

Tip: Instead of "[affected username]", type the username for your account, or the account that is experiencing this issue. For example, if the username is "theta," type:
cd /Users/theta/Library

Press Return.
Type: mv Preferences Preferences_old

Press Return.

Type: mv Caches Caches_old

Press Return.
Type: reboot
Press Return.

I also tried the suggestions in this forum including:

Repair Disk Permissions - Go to Applications|Utilities|Disk Utility and select repair disk permissions on your OS X drive

2) File System Check - When booting up your computer hold down the Apple Key & the S key and it will boot into single user mode. When the text is done loading on the screen type in /sbin/fsck -f and hit enter.
When that is done if it fixed things then do the check again to make sure it is cleared
When finished with that type in exit and it will start the computer in normal mode

I also tried these 2 things bit it just went in to non existent Safe Mode:

5) Resetting the PRAM: When booting, hold down Command-Option-P-R and wait for the triple startup chimes.

6) Reset Nonvolatile Firmware: When booting, hold down Command-Option-O-F and wait for the command prompt. Type "reset-nvram" and hit enter.

And I could not work out how to do the following suggestion (where does one delet preferences or caches):

3) If it is a particular program that is giving you problems delete its preferences in 'Your User Name'/Library/Preferences

4) Clean Your Caches - Delete everything in the folders Library/Caches and in Users/*Your User Name*/Library/Caches. When finished reboot.

Oh and I have also run Alsofts' Diskwarrior to no avail.

As stated earlier I have been at this for over 2 weeks now. Please can someone help me sort it out.

Thanks a lot.

Dave
QUOTE Thanks