PowerPC :: G5 Freezes During Startup Fan Speeds Up?
Aug 21, 2008
My computer crashed today and hasn't been able to boot back up since. It gets to the grey screen with the Apple logo and stops. The fan then ramps itself up to overdrive.
I've started it up in target disk mode and repaired it using Diskwarrior on my macbook. It had to repair quite a bit and then it showed up on the desktop of the laptop. I can read, write and pull from it. I then ejected the powermac and started it up again to find the same problem persisting.
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Dec 30, 2006
The 64 bit 33MHZ PCI slots on a G4 are running at 133MBps correct? Also I want to know if all 4 of them are running fully inpendent from each other? So if I have a RAID card in there I can get the full 133MBps and will not be robbed of speed if I have a neighboring Firewire 800 or SATA RAID next to it.
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Jun 30, 2007
So today I got back to the house, to find my iMac had turned itself off somehow in the hour that I was away, and when I went to reboot it, it turned on like normal, but the fans began blaring very loudly. When I checked out the speeds in iStatpro, the hard drive fan was going at about 3700rpm and the optical drive fan was around 2900. The fans normalized shortly thereafter, but I don't know if this is cause for concern, or just a little random kink.
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Jul 3, 2007
CPU cooling fans are running at strange different speeds. Powermac G5 early 2005, dual G5 (not dual core).This is at idle:CPU A 60 degree Intake 300rpm Exhaust 300rpmCPU B 63 degrees Intake 1125rpm Exhaust 1100rpm! I have not noticed this before. They usually remain identical.
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May 2, 2010
i've got a 6 year old 12 inch powerbook G4 1.33 ghz that has internet speeds around 5177kbps, but overall its a bit dated sooo I wanted something a bit more new. I recently picked up a white 2.4 ghz Intel Core 2 Duo Macbook, HOWEVER the internet wireless speeds on it is dismal in comparison. I'm getting download speeds on average around 405kbps and upload speeds are pretty much non-existant! I've matched both of them to the same internet settings and they are both running 10.5.8. So again I'm stumped and if anybody can give me some idea as to what to do, Id greatly appreciate it!
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Sep 25, 2005
adium froze, so i force quit it and restarted.....well now the computer freezes at the startup screen..........ive tried doing the shirt cmd opt del to boot fom my external but it doesnt work.........it freezes at the screen with the apple and the little spinning dial thing on the grey backdrop.....PLEASE HELP. im really worried since i dont have apple care....thanks.....help is appreciated asap because i have a paper i need to print out on it
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Jan 23, 2009
system info:
Dual 1.8GHz PowerPC G5
2 GB SDRAM
OS 10.5.6
My computer is 4.5 years old. And every winter for the past 3 years it's had troubles starting up in the cold mornings. Gradually getting worse each winter.
Today wasn't too bad.. it started up on the 2nd try. But on a particularly frosty day it might take 3 goes.
It freezes anywhere between the grey screen to the loading wheel to the desktops appearance.
Sometimes it freezes and gives the message to switch it off by the power button.
On occasion it freezes and shows me this: [URL]
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Jan 4, 2009
I'm working on a G4, 733 mhz Power pc running 10.4. After replacing the internal battery, computer freezes up at startup. I hear the chime, blue screen and OS X box appears with progress bar and then nothing happens.
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Jun 7, 2012
Macbook freezes after startup
Info:MacBookPro, Mac OS X (10.7.4), after startup
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Jul 4, 2012
My 5 y.o. aluminum iMac recently went kaput on me. Problems it has:
-Freezes on any program after startup
-Freezes during safe boot mode; grey line won't progress past first 10% or so
-DVD stuck in optical drive and nothing works to get it out, so I can't boot from my install disk
-fsck -fy doesn't complete, and keeps timing out
-Migration Assistant either stalls the receiving computer, or just gives me "network" errors (even though I'm connected to the internet), or other errors.
I can't run terminal, disk utility, or any other kind of programs.How do I rescue my files from my failing iMac??
Info:
iMac (20-inch Mid 2007), Mac OS X (10.6.7)
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Jul 1, 2014
I have an old macbook, its about 5 years old, one of the first aluminum models.
It has always served me well but now it has broken.
When I try and start it up it shows the grey loading screen, I see the little stripes rotating, to show that something is loading and then... it turns off.
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Jun 23, 2014
I have got a problem with my brand new Mac Pro. It randomly freezes at start-up and shutdown. I sometimes am able to work around the problem by turning on the monitors last or switching them off first but it does not always work and is a pain anyway. While waiting for Apple or another manufacturer to release a decently priced 4k display, I am using 2 HP 24' monitors inherited from my previous desktop.
One is connected via an HDMI cable (HP2405) and the other via a thunderbolt to HDMI cable with a DVI adapter (HP2448).Would I be better of using a Thunderbolt connection for both displays ? Or any other connection?
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Sep 25, 2010
This is my first Mac user problem posting going back to my original SE! Power PC based imac running leopard 10.5.8 starts up but then mouse freezes after a few mins. Managed to change sleep mode to 15mins - same problem. Can't boot from Disk as same problem, also command+option and shift all still have mouse unmoved! Obvious change of keyboard and mouse have no effect. Could this be related to offspring's addition of ipad plugged into usb a few weeks back? He tends to unplug the device without ejecting!
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Nov 10, 2009
I have a early 09 iMac 2.93Ghz with 6GB of ram. About a month ago it kept freezing at the grey startup screen. I took it to Apple and two trips to Apple later my hard drive was replaced. One month later here I am and the problem is happening again, the same exact problem. I turn on the iMac it goes to the grey screen, the beach ball "like" thing starts spinning and then it freezes in the middle of it and I have to do a hard power off(hold down the power button). Any ideas!? I already scheduled a appointment with Apple tomorrow afternoon but its a royal pain in the a** to keep shuffling my iMac between home and the Apple store. This will be my 4th trip in for the same problem, btw.
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Oct 21, 2008
I got this problem with my MB, it freezes in the startup. I went to the Macstore and asked a technician for help. He said it could be the Mac OS or the harddrive. He said I should try the Apple Hardware Test and see if's anything wrong. I got this error message: 4SNS/1/40000000:TCOD-102.125 I've searched Google with no positive result. Does anyone in here know anything about the error message?
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Mar 15, 2009
I'm on a G5 in OS X 10.3.9 running a few user accounts. The main one (aside from the system admin account) has quite a bit of software on it and it freezes on startup while the others work fine. I don't think its a RAM issue because I also run an external drive from time to time and it works perfectly. Something I've installed is freezing the system under the one user account but I'm not sure what.
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Mar 30, 2012
My iMac 24 inch freezes on the apple startup screen, then it takes along time for the cog wheel to start turning, and then that's all you'll get untill you switch off. I've fixed permissions and erased and reinstalled but still same issues, any ideas for what to do next?
Info:iMac, Mac OS X (10.6.8)
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Mar 22, 2009
Almost every other day when I start up my iMac it freezes and I have to restart it to get it working. Can anyone offer me any advice on this?
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Apr 27, 2008
I have a mac pro running leopard (purchased in 2/08) and it was running beautifully for almost 2 months with no hangs, crashes or freezes. Then, for some reason, today when I turned it on, it would not boot. It would get to the apple logo, then just sit there for a few minutes, then reboot itself and the same thing would happen. I pulled out the ethernet cable, unplugged all usb except keyboard/mouse and it would then (sometimes) boot into the system, log me in and present me with the UI.
I then quickly performed a soft reboot and it would get to the desktop. However, I can only use it for anywhere from 30 seconds to 5 minutes before it would completely lockup. The clock freezes, the mouse freezes and it just sits there forever. I have tried booting into Vista (BootCamp) and it also freezes before startup is complete. If I hold down Option and then select the System disk, it will either just hang forever or get to the desktop and then freeze again....................
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Mar 24, 2012
My mac is very slow, to start it takes about 7 minutes and it freezes all the time for hours.
Info:
Mac Pro, Mac OS X (10.7.3)
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Jun 2, 2014
I was off of my iMac for an hour or two so my screen saver when on. I went to wake the computer and it was frozen. I tried using the keyboard and mouse to wake up the computer from the screen saver, but it would not work, so I powered the iMac down manually from the button on the back. I let it sit for 15 minutes, then I tried to start the computer up again. Now at start up, I get to a blank white screen with the spinning moving pin wheel, and that is it.
Info:
IMac 2Ghz Intel Core Duo, Mac OS X (10.5.7)
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Mar 15, 2012
My Snow leopard machine hangs during startup at the screen with the Grey Apple logo. It appears there is a SW issue with my OS X boot partition. Here are facts I have learned:The computer boots fine if I hold option at startup and select my boot camp partitionThe compute boots fine if I attach an external HD with OS X 10.6Running a disk repair from the external HD, I see the following two issues that are repaired. Also, note the last line about boot partitionsAfter this disk repair, the disk will still not boot, it hangs at the Grey Apple logo.Booting in safe mode does not resolve the issue, the machine will still not boot to a desktopBooting in Verbose mode, drivers initialize with the last succesful line being the ethernet drives (I believe) and then the hangup occurs. It is unclear what state the boot process is at on the hangup.
This situation has happen twice in the past few weeks. The first time I did a reinstall of OS X to resolve the issue. Then, the issue appeared again approximately two weeks later. I'm hoping to avoid a second reinstall (And really, avoid this issue in the future). It seems perhaps something in the boot partition table or the OS partition, although disk utility says the partition is fine. I have downloaded Test Disk 6.13 to look at the partition table, but I don't know how to interpret the outputs of that program.
Info:
MacBook Pro (15-inch Core 2 Duo), Mac OS X (10.6.3), 2 GB RAM, Boot Camp, Ex HD avail
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Apr 10, 2012
Notebooks affected by this troubleshoot:Macbook Pro 15" 6,2 Mid 2010 (OS 10.7.3) with all Apple updates installed - 2,66Ghz Core i7 - Apple SSD 128GBMacbook Pro 15" Late 2011 (OS 10.7.2) - 2,4Ghz Core i7 - standard specs Troubleshoot : At startup, Lion freezes before the user is able to type his login/password. We see the login prompt interface of Lion, but can't even move mouse cursor.Keyboard's inactive too because system is frozen.So you must force a shutdown.And it's a loop-freezes. You'll try several times to boot your laptop before it will succeed to open. (it's a 5-times boot to succeed - average) I've tried several times: P-Ram reset, repair the permissions of Macintosh HD with latest Lion recovery & from an external boot too.None of this has solved this issue. I'm sure I'm not the only one who saw that issue. Have to boot 5 or 10 times his Macbook Pro to succeed a boot is not a normal use
Info:
MacBook Pro, Mac OS X (10.7.3)
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May 17, 2012
How do I get my computer started so I can trouble shoot. Freezes during startup on Firefox begins loading!
Info:
iMac
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May 20, 2012
I recently had to replace my old mackbook with a mackbook pro. I need to recover some data from the old macbook but target mode isn't working. It keeps freezing at the apple start up (grey) screen.
Info:
MacBook
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Jun 3, 2012
After my MaBook Pro2,1 - Intel Core 2 Duo - 2,33 GHz & 2 GB Memory - with 10.6.8. Freeze on startup every time, only running in "Save Boot" mode. I choose do perform a hardware test with the version 3A116 on a earlier Mac OS Install Disk.The test (3 times) shows an error code (after 1. test I switched memory cards), I am not able to interpret this:
4SNS / 1 / 400 000 00 : TBOT
Info:
MacBook Pro, Mac OS X (10.6.8), 17"Display Intel core 2 Duo 2.33GHz
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Apr 11, 2010
My August 2007 MacBook runs OSX 10.4.10. It has performed flawlessly since my daughter bought it in 2007, and perfectly after I purchased it from her last september. The other night I was surfing the web while flying on a commercial airliner. (GoGoNet or something similar) Performance was kind of slow but I attributed that to the in-air wifi, which I had never used before. Then the browser started to hang with the spinning pinwheel. Option apple escape WOULD NOT force quit safari. After a few shutdowns using only the power button, the mac hung up on startup. I hear the chime, see the apple icon, the gear turns but it never goes past that point. It may be significant that the plane was flying through scary turbulence when my problems began.
When I boot up using the mac install disk 1, I can get it to start cleanly using the C key, the D key and NO keys. But when I run the hardware diagnostic, both short and long test, the mac comes up 100% clean. But i cannot see any test for the hard drive. When I try to run disk utility, the colored pinwheel arrives and it never goes away. When I go down the road of re-installing the system software, I cannot see the target drive.
When I put my ear on the deck, just to the right of the track-pad, I can hear the hard drive quietly spinning away with regular - not random - clicks.
I see that Apple is quietly replacing these hard-drives, but the affected computers seem to have a folder/question mark on the desktop on startup, not the apple/spinning gear.
I really would like to be able to recover my photos and some files if the hard drive is going to be swapped. But I am resigned to the situation that these un-backed-up files will be forever lost.
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Jun 20, 2014
My Powebook G4 12" (model A1010) during its start-up phase remains stuck on the "initial gray screen" without displaying the apple logo. However, I can access the system through the console provided by Open Firmware.
I would like to ask you what could be the problem and where such problem may reside (hard drives, memory, main board, etc).
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Apr 5, 2007
My brother's iBook G4 (I think it's a 2003 model) has a problem with the screen. When the computer is turned on, the screen stays black, although the backlight is on (the apple glows). Sometimes, on start up, the screen works normally for a random amount of time before going fuzzy and then black again.
Any ideas on how to fix this? Is it likely to be a problem with the hardware in the actual computer, or just the screen? Or is it a software thing?
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May 31, 2007
I've been having problems with my Power Mac G5 crashing. The first time it would crash at random, with the fans kicking into high gear the red LED coming on. Apple support had me do an archive an install, no help and then a clean install which didn't help either. I took it into the shop and they replaced the logic board, and tested it.I got the machine back today and after about 2 hours of usage it crashed again, but this time I got a weird screen that scrolled across the screen.I have attached a screenshot and video of the issue:[URL]
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