PowerPC :: G5 IMac Will Not Turn Off?
Dec 18, 2007
My G5 iMac developed problems after upgrading latest updates to Tiger, iTunes, QuickTime, ect.
I am now unable to access apps like system preferences, iPhoto, Safari and others. Also it will sleep but unable to shut down. I'm hopeful a new install of my OS 10.4 disk will correct things but fearful my photos, music and FireFox bookmarks may be lost.
My beloved G5 has been flawless till now.
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Nov 30, 2008
I am dog/housesitting for my inlaws. Yesterday, before I left my house I shut down my iMac as always and for the heck of it, unplugged the computer, modem, and router stopped home today, and decided to hop on the computer real quick. plugged everything back in and the computer will NOT turn on. No noise, no lights, nothing. It was fine yesterday--I shut it down, unplugged it, and plugged it back in today---now it is completely dead! So I tried other plugs and no dice. Never had any power or shutdown/starup issue before. I called Mac---but outside of driving an hour to the Apple store--it wasn't much help. The guy did say it was most likely the cord. I would be wiling to try that--as it would be a cheap option, but it looks like I may have to drive to the Apple store anyway to get a cord that fits. I also tried resetting the PMU that Apples site recommends--and nothing. Any suggestion would be great. With the holidays the thought of dropping big $$$ on computer repairs is not appealing.
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Mar 9, 2010
**Intel Imac 24 in. 2.4GHZ Core 2 Duo (NOT G5...my bad)
I know the "Using imac as external monitor" topic has been adressed in previous posts and it apparently can't be done. But this is slightly different.
I have this Imac G5 24" that is currently out of order. (won't detect hard drives when powered on 90% of the time and when it does i am experiencing ridiculous lag and random shutdowns...not to mention crazy overheating)
I sent it to tech support and after changing the hard drive, power supply etc.. and still not seeing any improvement i just stopped sinking money in repairs and got a new imac.
So now i just have this useless imac laying around and i figured i might as well try and recycle it into a secondary monitor.. I don't mind hacking it open since i have nothing to lose. I was just wondering if it could be done and if so would it be very complicated? I would rather pay a few hundred dollars in wires and IT than buy a cheap external monitor since its already a decent quality monitor and it matches the new imac
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Sep 6, 2007
After having inserted a dvd borrowed from the library which my Imac had a really tough time reading, I turned off my Imac as usual. Since then when I turn my mac on the fan starts roaring and i don't get beyond the first white screen with the sort of clocked wheel just going round and round. I don't have a clue to what to do.
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Jan 4, 2009
Had (used) iBook G4 several months now & thoroughly enjoy it, even tho' I live in the sticks where there's no hi-speed/wireless available; I connect to internet & power, which is fine.
This weekend I went to turn off my iBook & it wouldn't turn off. It's now permanently on, with opening info barely visible (like I need to click on F2 to brighten up, except nothing happens).
Currently using my "back up" computer, my iMac Grape, which is pretty much an antique by now.
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Mar 31, 2008
So i have a Powermac G5 1.6ghz. I try to turn it on, but all I get are fans starting to "whirr" up. The blue light stays lit as long as I hold it in.
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Oct 16, 2008
I recently acquired a 15" TiBook from someone who no longer wanted it. He took good care of it and with the exception of a few slight surface scratches, it looks practically new.
That being said...it won't turn on!!
My question is -- does the battery need to be good for the unit to turn on, even if you've got it plugged into A/C power? The amber light on the plug comes on as if it's charging, and it never goes off. When I hit the little indicator button on the battery, nothing lights up. It would seem quite obviously that the battery is bad, but would that stop the unit from running off of wall power?
If it's just a bad battery I'll gladly buy a new one, just wanted to check before I waste my money!
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Oct 25, 2009
I don't know what the deal is. I'm trying to install 2 sticks of 2GB into my 7,1 iMac, and the screw just won't turn. I'm using a standard Phillips head, and nothin' doin'. The screw is now starting to strip, so I guess I'm going to have to take this into the friggin' Apple Store just to have them open the thing.
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Sep 30, 2006
I'm trying to record something through the internal mic (and I'm too cheap to go out and buy a proper mic) and I was wondering if there is anyway through Terminal,or an external program, to force the fans to shut off for a certain period of time? I don't want to turn them off to find they can't turn back on and suddenly the computer is 1000�...I just want to keep them off to have a minimal amount of background noise. (And, yes, I'll be running it in a moderate climate so the computer doesn't overheat).
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Feb 20, 2007
Is there a way to turn on the light in the keyboard even if there is enough light to keep it off?
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Jun 23, 2007
a friend of mine with an ibook g4 1.4 ghz, Is having some troubles as he described it to me; an apple comes on the screen and blinks off
then the screen turns white the whole screen then it turns red then blue then green every 3 seconds do you guys have any idea what this could be he is out of the apple warranty.
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Sep 7, 2007
I've upgraded my HD two days ago. Today my PB suddenly turned off and won't turn back on. All the connectors are in the right places and nothing looks wrong inside. I have no idea what's happened.
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Jun 9, 2009
Here's a fun one for you guys. My teacher in my class (tech school for computers and networking) acquired an old iBook, 14 inch. He has no idea what model it is, or what the specs are. He gave it to me to try to repair, being the only Mac guy in the Here's the deal. It charges the battery, and but won't turn on. I tried the PMU reset.
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Aug 1, 2009
It just started getting really hot quickly for about a week before it didn't turn on. I would have it tilted so that its not flat, hoping that it would give it more air but it didn't do anything. I don't even need to do much to get it really hot. And I shut it off every night, so it should get to reset itself. I haven't done anything different that I haven't before. Any fixes please!? Also what's really weird is that it gets hotter and hotter even when it is off and not even plugged in.
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Oct 14, 2009
I have a PowerBook G4 1.67 that shut itself down sometime during the day yesterday, and will not power back up. It's completely unresponsive to the power button, with no signs of life whatsoever.
I've tried resetting the PMU. There has been no new hardware or software installed. This has been tried with 2 batteries, and 2 AC power supplies.
There is inconsistency with the color of the AC power supply tip, as it doesn't seem to indicate the strength of the battery. Regardless of which battery or how much charge is left, the tip is Green, and will flicker Yellow very quickly once, when plugged in. It was Green following the initial shutdown, Yellow when I placed a dead battery in it, and then eventually turned Green. Now, it seems permanently in the Green / flicker Yellow state.
It did fully charge one battery while like this.
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Jul 17, 2007
Basically, the iBook G4 (last revision) will not turn on. What is happening I press the power button, the iBook chimes, HDD makes its regular "computer was just turned on" noises and then the computer sits at the Grey Screen and the little swirly loading thing comes up and nothing else happens. What happened before the issue I was browsing the web last night and before turning it off for the night I ran MainMenu's batch tasks. I have been using MainMenu for several months with zero issues up till now. My sister said she needed to use my computer for a few minutes so I turned it back on. It sat at the Grey Screen for 15 minutes so I force shut down and tried again. After another 15 minutes I went to bed (it was getting late) and left it to see what happened over night. Somewhere in my 8 hours of sleep the computer gave up and turned itself off. I have not heard any tell-tale signs of an HDD failure - no clicking, buzzing or scratchy noises. Possible Culprits UNO - has been installed for over a month but it does have access to system files so I'm not clearing its name. MainMenu - Been using for a while but it was the last thing I did before the problem arose. What I've done to fix it - Reset the PMU by pressing Shift + Option + Control + Power Button - Boot off restore disk and repaired the disk in Disk Utility. The volume bit map and volume information needed repair. is the poor sucker dead?
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Nov 1, 2007
So my quicksilver has been working great up until this afternoon. i had to restart and now whenever i turn it on all i get is a blank grey screen and nothing else. i dont hear a startup chime or anything.
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Mar 6, 2008
I have an old iBook G4 (1.2 GHz, 1GB RAM, 80GB HD) that is quite slow but physically in great condition. I want to strip all the unnecessary crap off it, leaving just what's necessary and Firefox/Safari, Adium, SlingPlayer, TextEdit (OK, I guess I'm leaving one unnecessary item on it) and making it as fast as possible, as my newer MacBook Pro is working fine as my "main" computer and I mostly just want a secondary road machine to tote around. Should I just do a complete reinstall of Leopard on it or is there a better way to retain what I do already want before using the nuclear option?
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Jul 27, 2008
My iBook G4 is refusing to turn on. Yesterday it started going really slow and pressing the power button wasn't bringing up the usual options, so I held the power button to switch it off. On turning it back on it got stuck on the screen with the Apple logo and spinner for a long time so again I powered it off with the holding of the button. I then let it cool down (it was really hot) but now when I switch it on the spinner spins around 6 times then it turns itself off. It is still chiming. I'm away from home and don't have any discs - anything I can try or is it time for the Genius bar?
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Nov 26, 2008
Does anyone know if there's anyway to turn on an aluminum powerbook without the power button? I mean is there any keystroke combination that can turn a powerbook on?
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Jan 16, 2009
I bought an ibook a little while ago because I wanted a small, simple notebook and I love my home iMac. I found one for a good price on eBay and when it arrived everything seemed ok. I wanted to re-install the OS and set everything to my specifications because I was having a little trouble with some of the apps. Anyway, I went through the lengthy re-install and just as it finished counting down the seconds to completion, it shut down. I thought it might be in sleep mode because the little white light was on, so I hit a key and the light went off but nothing happened. Nothing on the screen, no HD noise, nothing. I'm at a loss because I really don't know much at all about hardware or software, which is why I liked the user-friendly Mac so much. The only thing that tells me it's getting power is the little green light at the power connector. I tried a PMU reset (there's no reset button on my model so it was a button combo of shift-ctrl-option-power I think) but that didn't do anything.
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Oct 16, 2009
I recently purchased a Powerbook G4 1.5Gz 12" but it will not turn on unless it is plugged in. once turned on, i can unplug it and it runs on its battery just fine though?? it also can't seem to remember the date and my internet connection each time i turn it on.
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Jan 28, 2010
I have an out-of-warranty 2005 iMac G5 running OS X 10.5 in my bedroom. The screen is very unreliable to the point where it stayed off all the time or gave weird colors and I had to purchase an external monitor (via mini-VGA). I have installed (successfully) spanning tools to allow both extended desktop (2 dual monitors) and mirrored display (2 monitors showing same thing).
However, after hooking up the external display, the iMac's bright display lights up my bedroom. I want to turn OFF my built-in display (i.e. no backlight) and have my external monitor act as my main display --- avoids having two displays eating electricity. Is this possible? (using any Terminal commands?) I don't want the computer to sleep, just to turn off the main display (even manually removing wires will work, if I can find a how-to guide on this!)
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Jun 11, 2008
I bought a PowerPC iBook G4 second hand from ebay, it was working fine until one day, it stpped turning off. My lecturer told me to hold the power key down until it turned off.
This was fine for a while but now it won't turn on, whenever I try to turn it on it just comes up with a grey screen and wont load. I have important information on my Mac which is vital to the course I am studying, I have tried turning it to hard drive mode to try and get the information from it but it doesn't show up on my other mac.
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Apr 3, 2008
My ibook G4 died last night. After having some trouble with the battery (i have to replace it), the laptop finally did'nt turned on never again. Although is plugged with the power cord, the computer does'nt make any sound and it does'nt turn on, it does'nt even sound the cooling fan spining.
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Jun 26, 2008
Got a 4 year old 15" PowerBook with a small history of battery issues. Its on its 3rd battery that is on its last leg. It can't be unplugged for more than 5 seconds or it shuts off...been this way for months. Well today it shut off and won't turn back on. Do I buy yet another battery or is my pb dead?
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Apr 19, 2012
i just got this Imac G3(second Hand) when i turn it on it makes theseound and starts loading ( just like normal) but then it says: disk: 0x8 (UNDEFINED) and then it is more like a command promt rather than a user interface
ps: this is my first mac so i am not used to it.
Info:
Imac G3, Mac OS X (10.2.x)
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Mar 22, 2009
we changed the hard drive in my friends G3 800 but now when you turn it on nothing comes up on the screen. It will act like it starting up, read the cd a little than sit idle.
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Aug 12, 2009
I bought a powerbook off ebay, it worked but on startup occasionally a folder icon would appear. I rebooted from the original discs which seemed to do the trick. However the original discs are too old for many of my apps, so I bought some newer install discs (osx 10.5) I put the install disk in and got the panic message 'panic: Im hanging here'
The answer seems to be to run a disk repair (am i right?) However to do that I need to eject the install disc, I can't get the install disk out and of course it keeps tripping up everytime I start it. There is no secret little button to eject the disk manually. I have tried holding down apple and S but the install disk over rides everything and trips the mac up. I think ill be okay if I can just get this disk out.
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Jul 21, 2009
I have a G5 dual 1.8 power PC...Bought some ram put it in & booted up. Then a red light came on the logic board behind the power button. The machine wouldn't turn on....I called apple care & we rearranged the ram, now the red light is gone but my system still won't boot up. The white power light blinks every few seconds... the apple store told me sorry can't help because your machine is vintage. Even if my logic board is fried is there a place to buy one on the cheap?
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