My Power Mac G4 will immediately eject DVD's

My Power Mac G4 ejects any DVD almost immediately, but will read CD's. This computer has always done this from the first day I got it. Now I am trying to buy software that needs to be downloaded by DVD and I am trying to fix the glitch this system has. Can anyone help? Thanks you.

Wow, that was amazing, they even had my exact computer, the dual mirrored doors G-4. Here is what I learned from watching that video. When I press the eject key on my keyboard only the top mirrored door opens and 1 cd/dvd tray comes out. Should the bottom silver door also open out? I was able to open the bottom silver door manually and inside is silver/metal cover (so you can't see anything). My 2 guesses is either the top and only door that opens up is supposed to ready CD's and DVD's and my computer does not read the DVD's. 2. The bottom door is the DVD reader and it was never installed or the silver cover at the front of the door is blocking it from opening up. I was able to find the manual online for which was very vague with the explanations.
http://www.apple.com/support/manuals/powermac/
at the bottom of the page were the 2 manuals that speak to DVD's both have different info on page 42
Power Mac G4 (Digital Audio): Setting Up (Manual)
Power Mac G4 (Gigabit Ethernet): Setting Up (Manual)
Let me know what you think. Thanks for your time and energy on this topic. J.

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Hello,
You need to put the Tiger Install Disc in the 2011 iMac, boot the 2011 uMac into Target mode...
http://support.apple.com/kb/HT1661
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My Power Mac G4 MDD has no DVD drive how do I pair it install OS X on my new HD.

Hi, two ways...
Put the Install Disc in another Mac tathas Firewire, put the other Mac into Target mode...
http://support.apple.com/kb/HT1661
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http://eshop.macsales.com/item/OWC/MRF82SD24LS/
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Great clue Lukas...
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Same thing happened to my G5 dual (late 2004 model). Just did a quick search to find out "power supply unit failure" is most likely the cause.
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This guy replaced the PSU and documented the process:
http://damntechnology.blogspot.com/2009/02/rebuilding-powermac-g5-power-supply.h tml
Taking out the heat sinks to get to the PSU is a challenge. This link shows how:
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Hi Al,
Most likely cause is a PCI card, or some attached USB or Firewire device, but possiblt 3rd party SW.
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
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http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
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Reboot, test again.
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Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
iStat Menus...
http://bjango.com/mac/istatmenus/
And/or iStat Pro...
http://www.islayer.com/apps/istatpro/
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Power Mac G4 will not start up

Friends I have a Power Mac G4 MDD Dual 1Ghz/ 10.5.8 /2 GB Ram. For the past several months the only way for me to start the Mac was to un plug the power cord, then plug it back in. Computer behaved fine in every aspect. At times the Mac would shut down instead of going to sleep or shut down after several days of sleep. However the last several days it would not start up at all. I press the button on the MAC, fan would start and light would glow for about a second, then die. I read on the net to un plug everything, remove the battery, press the reset button inside the mac, hold in for 5 seconds, then press the start button for 5 seconds. Let it alone for 1/2 hour.... Unit still did not respond. So, I repeated the procedure and let it alone overnight. It started with no problems the next morning!! It would even restart.... no problems. It would even start up after shut down, ( I now know it must be within minutes). Thinking I had fixed the problem I shut down the computer again. Returned that night.. would not restart. Repeated the above procedure and this morning it started back up...... Could it be the power supply? It's currently asleep but wakes up... no problem. Computer works... except if I shut down for any length of time.... What could be wrong? Can I do any other procedure while it's alive and running? Any test I could perform? Can power supplies act like this? Any suggestions? Why does it start up after the above procedure?
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I would first replacve the internal PRAM memory battery. Check this site for battery part numbers and sources. https://sites.google.com/site/macpram/mac-pram-nvram-cuda-pmu-battery-tutorial Mac PRAM, NVRAM, CUDA/PMU & Battery Tutorial
Some things to try.
* Reset the PMU http://support.apple.com/kb/ht1939
* Resetting the Logic Board - Resetting the logic board can resolve many system problems. Whenever you have a unit that fails to power up, you should follow this procedure before replacing any modules.
1 Unplug the computer.
2 Press the Power On button on the front of the unit.
3 Open the side access panel.
4 Remove the battery from the logic board.
5 Wait at least 10 minutes before replacing the battery.
6 Make sure the battery is installed in the correct +/-
direction.
7 Reassemble the computer and test the unit.
Note:
This procedure resets the computer’s PRAM. Be sure to
check the computer’s time/date and other system parameter settings
* Resolve startup issues and perform disk maintenance with Disk Utility and fsck
http://docs.info.apple.com/article.html?artnum=106214
* Troubleshooting: My computer won't turn on
http://docs.info.apple.com/article.html?artnum=300552
* Power Mac G4: Computer Does Not Power On, No Fan Movement
http://docs.info.apple.com/article.html?artnum=95038
 Cheers, Tom

Power mac g5 will not reboot with Startup discs. Has had hard drives replaced with PC ones

I have an old G5 power mac tower. The hard dives were removed and replaced with PCs ones before I was given it. I do not know if they were formatted. I have the original boot up disc and I want to start again with this tower. The tower turns on but does not recognise the keyboard (which I know works) so I am unable to boot from the CD to have a fresh tower.
Any ideas

If the drive(s) is bad, it can prevent boot.
Try removing the drives and then try and boot to the install disc (hold C).
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Power Mac G5 will not start up

My Power Mac G5 had been left in sleep mode under my desk for about a month. I would use for a few minutes a day to check e-mails and then it would go back to sleep. The last time I checked it, it was off, when I tried to start it up nothing happened. I unplugged it and tried a new outlet, but nothing happened.
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Any help is much appreciated.

Hi Dylan, and a warm welcome to the forums!
How to reset the SMU on a Power Mac G5 (Late 2004) or Power Mac G5 (Late 2005) ...
http://support.apple.com/kb/HT1436
Earlier G3, G4, G5 models...
http://support.apple.com/kb/HT1939
PM G5 won't start...
http://support.apple.com/kb/HT2173

Power Mac G5 will not power on

Ok a little background:
Bought this (June 2004, dual 2.0 ghz) from a friend. Was fully working at the time. I took apart the computer to clean all the parts, it was quite dusty after 4 years of service. Now when I put everything back together, it won't power up!
I was quite extensive in my disassembly (I took out logic board, PSU, HD cage, all fans), and made sure everything was back in order. I am quite experienced at working with computers, so I am not inclined to say it was my fault that I probably statically discharged any components or damaged it when disassembling (I have built and serviced many computers before).
I am guessing it is the PRAM battery that is at fault? I have read a dead battery will cause the machine to not power up at all, and it is after all a 4 year old computer, so battery life was probably reached, so could it be just a wierd coincidence that after I cleaned it out it failed to start? PSU doesn't seem to be broken because there are two clicks whenever I plug it in.
One thing I did notice was that when I took out the battery and plugged it in, the power LED blinks once quickly, but when I put the battery back in and plug it in, the power LED doesn't blink. That is the only indicator that there is some life in the system (are there other diagnostic LEDs in the logic board I am not aware of?). Resetting the PMU does not fix anything, nor is leaving the battery out for an extended amount of time.
Any ideas Mac Gurus?
Thanks!

RAM stores certain system and device settings in a location that Mac OS X can access quickly. Exactly which settings are stored in the computer's PRAM varies depending on the type of computer as well as the types of devices and drives connected to the computer. Parameter RAM is a small area of non-volatile RAM (NVRAM).
Some information stored in PRAM includes:
Display and video settings such as refresh rate, screen resolution, number of colors
Startup volume choice
Speaker volume
Recent kernel panic information, if any
DVD region setting
If you battery is bad this info is not available and your Mac will not start up>
Message was edited by: macbig

Can't boot Power Mac G5 up from anything (DVD, USB or HDD)

Hope someone can help me with this one
My mum has an old PowerMac G5, the dual-core 2GHz one (I can't remember what it is exactly) and it won't boot up anymore.
At first I replaced the hard drive because it was making some funny sounds... scratchy-ness.. then with the new hard drive, my dad was able to install 10.3 on it which booted up pretty reliably after reseting the SMU. Then I thought I'd replace the 10.3 installation with 10.5.8, so i tried to install it off a 10.5.8 disk just by booting into to 10.3, opening the disc and clicking the 'Instal Mac OS X' thing, then restarting. But the computer would just keep restarting to 10.3
long story short, the computer won't even turn on now. The light next to the power button doesn't come on, but the fans are on and the hard drive is alive. I've tried booting from the original 10.3 DVD, but that doesn't work either. The DVD drive spins up for like 20-30 seconds, then stops.
I've got one of these: http://www.everymac.com/images/monitor_pictures/apple_cinema_display.jpg and the power button light doesn't come on on that either.
The computer was working fine up until a few days ago.
I've reseated the RAM, reset the SMU, tried booting with C held down. Nothing seems to work.
Thanks in advance

Yeah, the monitor button turns the mac on, but once the comp is on, the light goes off and the screen stays black
I'll give it a go, but I don't believe so.

My Power Mac G4 will immediately eject DVD's

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