PowerMac G5 boot up stall at apple screen

G5 2.5 Dual Chip. Push power button, hear the boot chime (sometimes) then it stalls on the gray apple screen with no spinning "flower". If I leave it running the fans start slowly running louder and louder until it sounds like a jet engine.
Fortunately, I have the system disk in the CD drive. However, when I try to boot from it using the C key, I hear the disk spin but then it stops and a "buster" symbol replaces apple on the screen. Then fans go crazy again. I have disconnected all all USB, Firewire and RAM that did not come with the computer. Same symptoms. Tried booting in single user and safe mode but keyboard doesn't seem to be responding. I also swithched the USB ports for the mouse and keyboard and tried again.
I am not positive which OS version I am running but I think I have updated recently.
Please help.
Thank you.

I have had this problem as well on over 6 occasions,It happened to me most of the time after a ram install,The last episodes I had I started hooking everything backup that I had unplugged after my grey screen episode.
1st I hooked up my 2nd hd,all is well
2nd I install memory,no luck,grey screen,I install 2 more different pairs,no luck grey screen.I try to start with original ram,grey screen!that trips me out most of all!so I boot into safemode,repair disk permissions,I am able to reboot.
One pair of ram I tried to install,I had in my system and The computer gave me a message"harddrive is failing in 2nd drive bay"at the time I just thought oh well bad hd,I have come to find out that is a signal for faulty ram,I kept the ram in the system at the time,I did not get any other errors,I tried to install another pair of ram one night,grey screen!
One part of the grey screen problem is faulty ram.
The pram battery on the motherboard maybe another part of the problem,in the last few weeks I was able to install 2 pairs of 1gb modules in my g5,and I tested them with mem test,ram is good.But,On rare occasions my 2nd harddrive would dissappear!
After a few reboots it would reappear!
There was a power outage this weekend at my house,I have my g5 on a back up ups,I had the g5 on back up power,I did not have my main monitor on backup power a 24inch dell dvi connection, I have a 15inch cinema display on the adc,still going because the g5 is on back up.I hard shutdown by pressing the power button on the front of the computer.
The power was out for 4hrs,that means the battery drained out and the g5 was with out power for an extended period of time.
The following day I had decided to call applecare about replacing my powersupply,My serial number qualifys for replacement.
To my suprise the second harddrive is not there!I have a different grey screen now,my 24inch is black,the 15 is grey,a couple of minutes go by,both screens turn grey,computer boots to show only one hd!
So I keep everything like it is,tell applecare guy whats going on after I request power supply replacement,he says you should take it to the applestore.
After I get off the phone with applecare guy I get a crazy hunch to disconnect my adc display,I boot the machine,Both harddrives are there!
What I am getting to here is the g5 is a power sucker,now that I have good ram,I think the battery on the mother board is no good.The power supply may also be suspect.
I think sometimes most outlets may not be strong enough support the power hungry g5,ln my case when I added ram that=s using more power.thus drainning the battery.
I to have noticed after leaving the system unplugged,the system will boot up.I think it resets something internally,then you plug it back up,your fine for a little while,then the problem returns.
Thats my Take,hope you can relate.

Similar Messages

Mac won't boot, starts with white apple screen and spinning wheel. Also has grey loading bar which disappears after loaded then stays at white apple screen.

Mac won't boot, starts with white apple screen and spinning wheel. Also has grey loading bar which disappears after loaded then stays at white apple screen.

Hi cybertoof,
Welcome to Apple Support Communities.
It sounds like you're seeing a startup issue with your Mac, it's booting to a gray screen with an Apple logo. Try the suggestions in the article linked below, they will resolve most issues related to starting up your Mac.
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/TS2570
I hope this helps.
-Jason

PowerMac wont start up - Gets to Apple screen then goes black

Recently my 2.5Ghz DP PowerMac G5 has been behaving badly and now it appears to have died!
On startup it gets to the grey background with the Apple then nothing. No spinning gear and no Hard Drive activity from the Mac. After switching off and trying again not even the Apple screen comes up I just get a black screen. If I leave it a while then try again I get the Apple screen again but nothing else.
Tried starting up in 'Safe Mode' with shift pressed but using wireless keyboard and mouse wasn't sure if keyboard is recognised until Mac has fully booted. Tried switching to conventinal wired keyboard and mouse but still nothing - it's as if the keyboard isn't being found as the light on the Caps lock doesn't work while attemping a boot up. Does it matter where the keyboard is plugged in? Mac or monitor?
I can only think to take it in to Apple for repair but if anyone has any suggestions or ideas I would be very grateful!

Hi-
The 2.5GHz machine is liquid cooled.
Open up the tower, and look for signs of leakage:
http://www.fusina.net/G5coolantleaks/gallery.php
http://www.fusina.net/G5coolantleaks/index.php?lg=uk
http://www.youtube.com/watch?v=ZDyIIFyUpGI
http://www.xlr8yourmac.com/systems/G5coolantleaks.html
http://www.macintouch.com/readerreports/powermacg5/topic4243.html
http://www.macsimumnews.com/index.php/archive/macosgliquidcooled_power_mac_g5sleaking

G5 mac wont boot up past white apple screen

My kids mac wont boot up past the white apple screen. I can here everything running but the monitor starts to get all static and scan lines with a reddish tint to it. I tried the commandoption+pr but it still wouldn't boot-up past the white apple screen. Not sure what else to do. Any help would be greatly appreciated. Thanks in advance

Hi there Peter,
Not cheap anyway you look at it sorry, professional Data Recovery being the most expensive.
Unfortunately, Disk Utility can't fix all that much, and the only other Apple Options are erasing the HD, or installing OSX to a second drive, then using Migration Assistant to move stuff over to the new HD.
If Disk Utility or fsck should fail to repair it, your best bet is DiskWarrior from Alsoft, you'll need the CD to boot from if you don't have another boot drive...
http://www.alsoft.com/DiskWarrior/
Your best bet is DiskWarrior, you need the CD/DVD though.
http://www.alsoft.com/DiskWarrior/
But others that may work…
Drive Genius 2…
http://www.prosofteng.com/products/drive_genius.php
TechTool Pro 4…
http://www.micromat.com/index.php?option=com_content&task=view&id=31&Itemid=83
Data Rescue II...
http://www.prosofteng.com/products/data_rescue.php
This one would require another HD with plenty of space to recover to.
You should use another Boot Disk or other Mac with this one in Target mode to do the recovery.
They have a free demo to see what it could recover.

Macbook pro won't boot, stuck on white apple screen

Noticed today, that my macbook pro won't boot . It gets to the white apple screen with the spinner under the apple logo. It stays like this for a long time without doing anything except spinning.
I've powered down and tried to boot up several times.
I have boot camp and windows on my mac and when the white screen appears, I can press Option to bring up which hard drive and the Windows partition will load without any problems.

Exacty what happens when you try to boot up from the disc that came with your computer? Are you holding down the c key? Have you tried holding down the "option key?" Are you able to run the Hardware Test - Intel-based Macs: Using Apple Hardware Test
Shut down your computer and disconnect all peripherals (keyboard & mouse if pertinent) from your computer. Now reboot.
If the Mac starts up normally, shut it down again and then plug in one of the peripherals (keyboard or mouse first) and start up your computer again. If it does so successfully repeat the process, adding one peripheral at a time until your Mac acts up. At that point, disconnect the last peripheral you added, reboot your Mac and search the peripheral vendor's website for an updated driver.
If no driver exists or the problem remain after installing the new driver, try a different cable or a different port on your Mac.
If none of the above works, again disconnect all peripherals from your Mac, hold down the "shift" key to start up in "Safe Boot" mode.
If the Mac starts up correctly, restart without pressing the "shift" key.
If your computer still does not start up properly, shut it down and restart it while holding down the Apple+Option-P-R keys; keep holding "all 4 keys" down until you hear the startup sound "twice."
If none of the above work Disconnect all peripherals from your computer. Boot from your install disc & run Repair Disk from the utility menu. To use the Install Mac OS X disc, insert the disc, and restart your computer while holding down the C key as it starts up.
Select your language.
Once on the desktop, select Utility in the menu bar.
Select Disk Utility.
Select the disk or volume in the list of disks and volumes, and then click First Aid.
Click Repair Disk.
(If Disk Utility cannot repair, you will need a stronger utility (3rd party) - Diskwarrior or Techtool PRO)
Restart your computer when done.
Repair permissions after you reach the desktop-http://docs.info.apple.com/article.html?artnum=25751 and restart your computer.
Remove any 3rd party ram.
Reinstall Lion - This will install a "fresh" copy of Lion without archiving old system files but leaves the rest of your files in place.
If your computer is still under warranty or you have Apple Care, take full advantage of it by letting tech support deal with your problems. It's what you're paying them for.
Out of warranty - take the computer to an Apple store or an AASP. Whichever is more convenient for you.

System Boot Hangs on Grey Apple screen / AppleIntelCPUPowerManagement

Hi All
I have had this issue on going on MacPro (early 2008) Quad 3.0 and Quad 2.8 machines since 10.5.6.
Boot will hang on the grey screen with Apple Logo or in verbose mode more specifically on AppleIntelCPUPowerManagement: Initialization Complete.
In an attempt to fix I have repaired permissions & disks, both with DU and DW which report no major problems, removed system cache files and eventually reinstalled OSX from scratch and updated to current 10.5.8 systems. I have also tried the singleuser boot and /sbin/fsck -fy command which reports no problems. Still it persists.
The issue presents it's self randomly on multiple machines at various times. If I leave the computer long enough sometimes the boot will complete.. or not. Simply booting up in verbose mode will sometimes get the machine booting. This usually requires a hard power cycle from the hanging boot. re-seating the ram has also helped but so far no conclusive fix.
The only thing that I can think to relate it to is that these machines all share the same system image created with Carbon Copy Cloner (Current Version), however this also occurs on the Master machine. So either I have cloned the issue from the source (twice) or it is inherent to the machines. I have used a different master machine on the 2nd reinstall of the OSX system to rule out the master machine as the introduction of the issue.
These are all standard config Macpro machines with no modifications since getting them out of the box. I only mention this as I have researched this issue and mostly find that the machine in question had been altered in some way.
Does anybody have any further ideas on how I could resolve this?
I would appreciate your perspectives.
cheers,
k.
Ps. I have also posted in http://discussions.apple.com/message.jspa?messageID=10177491#10177491 as it has been the most relevant thread.

bump

G4 won't boot past grey apple screen

Hi. I have been having the same issues with my G4 15". I'm frustrated. The whole thing started with stalling during applications. So I decided to reinstall my OS X 10.5. After reinstall, I copied my saved files from my "My Book" drive back to my hard drive. Stalling issues returned. I reinstalled again. still had some stalling issues, so I performed disk utilities. I repaired permissions. SMART status is verified. System still ran extremely slow. So, I followed directions on apple support for resetting the PRAM and NVRAM. After I did this, the computer won't boot past the grey apple screen. I have reset the PRAM and the NVRAM again. Still nothing. I rebooted up from OS install disk. I performed disk utilities repairing permissions and repairing HD. I did this for both my drive and the computers drive. I choose restart and again the grey apple screen. I have been trying to get this thing going for a week now. I'm near tears. Cornelius or anyone, can you help me? It says no errors are found, SMART is verified. But I can't get the computer to boot unless it is from the CD. Is the computer confused on where to boot from? Or is it shot? HELP ME PLEASE, before I play frisbee with my dear beloved mac!!!! It seems like this ALL started happening after I installed the update 10.5.8. I had ZERO problem prior to any software updates!!!

There have been report of some external drives/enclosures that do not work as a boot device. Not sure if the MyBook is in that category or not, just make sure that there is nothing else plugged into the Powerbook then try again.
Does the WD need its own power to be plugged into an AC power source? Try the other firewire port
I have one more question for ya... You were able to load OSX on this EHD using the OSX install disk in the Powerbook? And the installer saw the EHD with no problems?
If non of the above works try booting while holding down the x-key, this should force it to look for an OSX volume, not sure if it works the same on an EHD but worth a shot.

G5 wont boot past white Apple screen.

To anybody that may have some advice. I hadn't used my power mac in about 4 days then when I turned it on last night it wouldn't boot past the white apple screen. I still have the chime my fans and processor still spin up. I tried resetting the SMU, and I also took out 3rd party ram I had installed and tried booting up to see if that was the problem. I'm prepared to take it to the apple store, I just thought somebody might have some advice before I take it there. So again when I boot up it reaches the white screen with the grey apple and then it just gives me the little grey spinning dial and just spins and spins. Thanks in advance to anybody with any advice.
Dual 2.0 GHz Power mac G5 Mac OS X (10.4.8)

Well first I booted holding option and it just booted into target disk mode or something like it, a screen that would allow me boot from a different drive if I had one that was formatted with Tiger. So then I rebooted holding >shift and OPtion. And it kernel paniced, it said it didnt have the driver for this version Tiger 7,2 or something along those lines and then it gave me apples screen of death asking me to restart.

Macbook won't boot past main apple screen

I was using my computer this morning (13" black Macbook that I've had since December) and it was working fine until I closed it to go get something to eat.
When I got back and opened the lid again, the screen was black, as if it was off, but I could make out the outline of the Apple logo in the centre. So I turned it off, gave it some time and turned it back on. Now it won't boot past the main Apple screen, where the little timer thing spins and spins and spins while apparently nothing else happens.
I left it alone for a couple of hours, thinking maybe it was overheated, but that didn't make a difference. I tried taking the battery out and restarting it, but that didn't work either. I called Apple, but my parents opted for Future Shop's warranty instead of Applecare, so they told me to search the website as "the issue is well-documented," since I have no tech support with them.
I've searched around to see where this is posted or if it's been answered a billion times before, but it's 35C in here, and my rage/frustration are ruining my ability to be rational, haha.
Anyone experienced this before / is there a resolution that doesn't involve me being without my computer (which is like sweet, sweet crack to me) for an undisclosed amount of time?
Thanks in advance,
Emy
Oh, and I'm not sure about the operating system version beyond that it's OSX and I regularly install whatever updates they tell me to.

Maybe Disk Utility can repair the disk this way:
-Search your installation DVD's.
-Insert the disc 1 and sthut down your Mac
-Start your Mac again while holding down the C key
-Now your Mac should boot from the CD, this can take some time.
-After a while you will see a installation screen where you can chose a language.
-Chose English and continue.
-Then click some time's next and agree with the "Software Agreement".
-Open Disk Utility. Top menu bar --> Utilities --> Open Disk Utility.
-Select your hard disk in the list of disks and volumes on the left side
-Go to the First Aid (tab somewhere on the right).
-Click the button to verify the permissions.
-Then Click the button to repair the permissions.
-Click the button to verify the disk.
-Then Click the button to repair the disk.
-Exit the Disk Utility

MacBook Pro: Tiger wont boot past grey apple screen w/ spinning gear, HELP!

Hey everybody,
I have a 1.83 Ghz MBP with 512 mb of RAM (lame I know). The other day someone was using my computer to burn a CD on iTunes when all of my programs began failing. On instinct I rebooted my computer to solve the problem. Alas, now I cant boot past the grey apple screen, and the gear is spinning away. Saddest part of the story is that I had time set aside to back up my computer the day after this happened . Anyway what is the best thing to do from here? I haven't made any moves to fix it yet really, so what is the best thing that I can do to try and get my files back?
Thank you,
Sam A.

Hi, I posted to you in yoour other thread.
I very much doubt Disk Utility or fsck will fix an +Invalid Node Structure+ error. That's a pretty serious error and DU is just not robust enough of a utility to repair it.
If Disk Utility can't fix it, you'll need a more robust utility for the repair. I would recommend DiskWarrior. It is the best at directory repairs. It rebuilds then actually replaces your old directory. I feel every Mac owner should have a copy. Make sure you get the disk so you can boot up on it to run repairs. You can also install it on another drive and run it from there to repair this one. DW works faster that way.
I use DW once a month to try and catch errors in my system from getting too far out of hand.
If you have a good backup, hopefully a clone of your system before you had issues, an Erase and Install will also rid you of this issue. But, beware! You will lose everything on the drive with this procedure. Let us know if you need help with that!
Cheers! DALE
p.s. If the +Invalid Node Structure+ is real bad, there's a risk even the mighty DiskWarrior will not be able to help. Normally it will come thru; it's only in the severe cases it won't be able to do it. If you don't have a backup, and need the data bad, it's worth the try!

IMac won't go past apple screen, keyboard won't connect

I cannot get my iMac to boot up past the apple screen with the loading circle. I would try booting up while holding the command and R keys or those other options, but my computer stopped working the one time my keyboard died and I had to change the batteries. Now it won't connect, and therefore will not register me holding down any keys. Are there any other options?

Restart the computer while holding down the C key. This will take several minutes to start up as it trying to start from the Install Disc. If you still cannot get it started call AppleCare immediately, the phone number is in your manual or you can
look it up here.
Roger

Mac Pro (early 2008) No chime, pixelated white apple screen

My Mac Pro (early 2008) stopped working this morning. It was working fine yesterday, but did not start today.
i Press the power button, and there is no chime. The fan whirls around and the cd disc drive makes a noise. The startup screen shows up with Pixelated black bars across the whole screen.
this his stays onscreen, freezes for a few minutes, then restarts And continues the cycle of freezing and restarting.
iI've tried to reset the smc and pram and that hasn't done anything.
i've cleaned the inside of the computer, checked the RAM and graphics card, they seem to be in good working order.
does anyone know what's wrong with it?

Hi BDAqua
i tried safe boot. The white apple screen still comes up pixelated but with a grey loading bar at the bottom. Once the bar has loaded fully, nothing happens. it stays frozen on that screen until I have to force it to shutdown by pressing and holding the power button on the front of the tower.
i Tried holding the alt key. It brings up the devices, the screen is still pixelated. Pressing either one of the disk drives, didn't do anything new Unfortunately.
https://mobile.twitter.com/SundeepToor/status/559966340883415040/photos
hopefully you can see what my screen looks like in the link.

My iMac won't boot i get an apple logo

my iMac won't boot i get an apple logo

Hi Paul,
If your iMac won't boot past a grey Apple screen, you may find the following article helpful:
Mac OS X: Gray screen appears during startup
http://support.apple.com/kb/ts2570
Regards,
- Brenden

Phone stuck on apple screen

i downloaded an app, rebooted my phone after and am stuck in a boot loop at the apple screen anyone else experience this ? Im new so please domt kill me if it been posted a million times . THANK U!! I have an iphone4 on 5.1.1

Is iPhone not responding? To reset iPhone, press and hold the Sleep/Wake button and the Home button at the same time for at least 10 seconds, until the Apple logo appears.

MacBook Pro won't boot after trying to install 10.7.3 update. Start up stalls at Apple logo and spinning gear.

MacBook Pro won't boot after trying to install 10.7.3 update. Start up stalls at Apple logo and spinning gear. Computer won't even start in safe mode.

My daughter's MacBook Pro was doing exactly the same thing. I don't know if it had anything to do with the latest update. She called me about a week ago saying that her MacBook began running slower by the day . She then called me Friday and told me that it wouldn't get past the gray screen and the gear just kept on spinning. I did everything I could over the phone including Safe mode which it wouldn't go into and thought maybe it was the hard drive. She took it to the Apple store. Originally, they also thought it was the hard drive. It ended up being a corrupted operating system (Lion). Apple genius simply re-installed Lion and she's back up and running. Good thing she backed up right before it crapped out. She'll be restoring everything tonight. Don't know if re-installing Lion will help your situation, but it did the trick for my daughter.

PowerMac G5 boot up stall at apple screen

Similar Messages

Maybe you are looking for