Help - G5 gets stuck at boot

G5 continues to get stuck at:
DART enabled
There is no hardware issue that I can tell. I fear my boot loader has been corrupted however, I am not expert and hope some of you may share some light on the subject.
I can't boot into CD either selecting from the options screen it gets stuck as above.
I am running Darwin Kernel Version 9.8.0
Thanks!

Here the full screen output at boot and where it gets stuck:
*Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu-1229.15.4~1/RELEASE_PPC*
*standard timeslicing quantum is 10000 us*
*vmpagebootstrap: 1020225 free pages and 28351 wired pages*
*migtable_maxdispl = 79*
*103 prelinked modules*
*Loading security extensions com.apple.security.TMSafetyNet*
*calling mpopolicyinit for TMSafetyNet*
*Security policy loaded: Safety net for Time Machine (TMSafetyNet)*
*Loading security extension com.apple.nke.applicaitonfirewall*
*Loading security extention com.apple.security.seatbelt*
*calling mpopolicyinit for mb*
*Seatbelt MACF policy initialized*
*Security policy loaded: Seatbelt Policy (mb)*
*Copyright (c) 1982, 1989, 1991, 1993*
*The Regents of the University of California. All rights reserved.*
*MAC Framework succesfully initialized*
*using 16384 buffer headers and 4096 cluster IO buffer headers*
*Airport_Brcm43xx::probe: 050b6000, 0*
*DART enabled*

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IMac purchased at garage sale help. Gets stuck at "Login Window Starting."

Hi all,
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Photos:
http://i605.photobucket.com/albums/tt135/gpd2paul4/IMG_0253.jpg
http://i605.photobucket.com/albums/tt135/gpd2paul4/IMG_0254.jpg
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Try holding down the shift key when powering on. This will skip a few programs from loading.
Hold down the shift key when booting into Mac OS X. this will check your file structure and do a repair. This will also leave off some files from being used.
http://support.apple.com/kb/HT1455
"What is Safe Boot, Safe Mode? (Mac OS X) "
http://support.apple.com/kb/HT1564?viewlocale=en_US
Try holding down the option key when powering on. This will bring up the startup manager. Perhaps 9 is installed. Click on icon then click on right arrow.
This is an iMac g3 slot loader.
Your Mac won't start up in Mac OS X (Mac OS X 10.3.9 or earlier).
http://support.apple.com/kb/TS1411?viewlocale=en_US
Which iMac Is It? OK here are some more comparison charts:
http://lowendmac.com/macdan/05/0202.html
http://docs.info.apple.com/article.html?artnum=58669
You need to figure out the level of your firmware before installing 10.2 or greater. ( The PC name for firmware is BIOS. ) Installing 10.2 with a down level firmware will most likely make your iMac unusable and difficult to fix.
What is firmware?
The firmware software receives control when you poweron your machine. It does some hardware testing and some hardware configuration then passes control to your version of Mac OS. It reside on a PROM ( program read only memory ) chip on the logic board.
Open Firmware, boot into Open Firmware.
Power on your iMac while holding down commandoption+of
The first output line contains the firmware level. Mine reads:
Apple PowerMac4,1 4.1.9f1 BootRom built on 09/14/01 at 13.18.04
Copyright 1994-2001 Apple Computer Inc.
On my machine, I have 4.1.9f1.
What firmware do you need?
http://docs.info.apple.com/article.html?artnum=86117
For a slot loading iMac, this article indicates that you need to be running 9.1 or later version of Mac OS Classic.
http://docs.info.apple.com/article.html?artnum=75130
"The iMac Firmware Update 4.1.9 will only run on iMac computers with lot-loading CD or DVD drives running Mac OS 9.1 or later from a local drive. If you are using Mac OS X you must boot from a local Mac OS 9.1 or later writeable partition (not a CD, or network disk) prior to following the update instructions."
You can download the Mac OS 9 updates from the Apple site.
http://support.apple.com/kb/HT1387?viewlocale=en_US
For tiger, you need 256meg of memory.
Mac OS X 10.4: System requirements
http://support.apple.com/kb/HT1514
There is no need to partition. You can save hard drive space by doing a custom install. Leave out the print drivers you do not need and the languages you do not need. Doing so you will need about three gigabytes of space.
You need to get into single use mode.
This page will tell you how to get into single user mode.
http://support.apple.com/kb/HT1492
Basically, you hold down the command-s key then powering on your machine. The command key has a little apple symbol on the lower left. It is between the alt/option key and the space bar
When you are in single user mode, you are in Unix. you can try looking in the log files to see if you can find anything.
To see the current boot log you use the dmsg command.
dmsg
startup information is in /var/log/system.log
to display the last 500 lines use the tail command.
tail -n 500 /var/log/system.log | more
For these commands you will need to gain write access to your startup disk. There are some comments at the end of the startup process that list the needed commands.
mac $ ls -lF ~/zztemp.txt
ls: /Users/mac/zztemp.txt: No such file or directory
mac $ tail -n 500 /var/log/system.log | cat > ~/zztemp.txt
mac $ nano ~/zztemp.txt
mac $
I assume the message contained /Library/Logs/CrashReporter. Do a change directory:
cd /Library/Logs/CrashReporter
mac $ pwd
/Library/Logs/CrashReporter
mac $ ls
???.crash.log VoiceCenter.crash.log
Exited process.crash.log
mac $ tail -n 400 \?\?\?.crash.log
Host Name: ???
Date/Time: 2008-09-15 14:28:37.577 -0400
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Report Version: 4
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Quote
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Code: [Select]
https://forum-en.msi.com/index.php?topic=151778.0
https://forum-en.msi.com/index.php?topic=145195.0
https://forum-en.msi.com/index.php?topic=147690.0
https://forum-en.msi.com/index.php?topic=152005.0
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pH0tr0N, please start your own new topic regarding your problem.
>> Please read and comply with the Forum Rules <<
>> Posting Guide <<
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MOVED: HELP! After defrag I boot get stuck at XP logo screen!

This topic has been moved to Operating Systems.
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17" 2.2GHz i7 Quad-Core MacBook Pro  8G RAM  750G HD + OCZ Vertex 3 SSD Boot HD 
Got problems with your Apple iDevice-like iPhone, iPad or iPod touch? Try Troubleshooting 101

Help - G5 gets stuck at boot

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