Hardware :: G4 800 Tower Switches Off After Start Up
Jan 31, 2009
I have a G4 800 powermac Quicksilver tower. I haven't used it regularly for a number of years, although it has been started up say every 5 months or so without any problems at all. Last weekend I started it up and it worked for about 2 minutes before suddenly shutting down, without warning. I tried starting up again and it started up, only to shut down as soon as the desktop appeared.
I started up again, and whilst the light in the power switch on the front panel illuminated, and a short 'apple boing' noise came on, it just shut down immediately after. Having left the computer untouched until the following weekend (today) the same order of events has unfolded. two minutes for the first go until unannounced shutdown, and then progressively shorter amounts of power. Whilst this isn't a critical piece of hardware for me, it does hold some useful data.
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Jun 6, 2014
My macbook pro just switches off itself....this happens 4-5 times a day and when i get it back on again...it shows the report as below... I don't know what it means....
Anonymous UUID: F88B2FE9-F41B-B6B2-DA49-27047BC09DDA
Fri Jun 6 16:35:23 2014panic(cpu 0 caller 0xffffff8016cdbf5e): Kernel trap at 0xffffff8006e21f20, type 14=page fault, registers:CR0: 0x0000000080010033, CR2: 0xffffff8006e21f20, CR3: 0x000000009bc17000, CR4: 0x0000000000000660RAX: 0x00000000752b0000, RBX: 0x0000000000000000, RCX: 0xffffff802baa7e30,
[code]....
Info:
MacBook Pro, OS X Mavericks (10.9.3), 8 gig ram.
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Mar 2, 2010
My 4/5 month old MBP has twice now "gone dead" and then just "come back to life". I'll just be browsing, nothing flash heavy and nothing else too taxing on the processor (email, itunes open but not playing, maybe text edit) and for no reason obvious to me the screen goes dead/black along with the back light on the keyboard dying. Then 2secs later the whole thing starts up again right were it left off, not a system restart like you might get if the battery dies, but the same way it would if you had physically pulled up the screen while it's been asleep.
Mac OS X version 10.6.2
2.53 Ghz Intel core 2 duo
4GB Memory
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Jun 3, 2012
My Imac(Intel) occasionally switches itself off. To bring it back to life I have to unplug it from the mains for a couple of hours. On plugging it back in the fan immediately starts up very noisily but nothing else happens. By holding down the on/off switch I turn the machine off. By pressing the on/off switch in the normal start up manner everything is OK.
Info:
iMac, Mac OS X (10.5.8)
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Jan 5, 2011
I recently upgraded to 10.6.5 from 10.5.8. Ever since then I have had a problem with spaces. The problem is as follows:
When switching Spaces, there is the onscreen graphic along the bottom, telling you which space you just switched to. However, sometimes when switching spaces on SL 10.6.5, the graphic will stay there and wont disappear as it should. When it just stays there, the entire keyboard stops working because Mac OS X still thinks I am performing the Spaces switch. A logout is required.
I am running 10.6.5 with all updates applied.
I searched for this problem both on MR & on google, and although it seems that I am not the only one with the problem, I can find neither a cause, nor a solution.
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Jul 20, 2006
My ibook g4 (about 15 months old) switches itself off when I move it. Then have to force turn off (holding start button down for 10 secs). I then have difficulty turning back on, in that most off the time the fan just starts, with no startup noise, and the computer just doesn't turn on except the fan. After a few tries it eventually works, but its hit and miss. Its my first mac and I'm really scared something major is wrong that will cost a fortune to fix?
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May 1, 2009
I have Spaces enabled to provide 4 virtual screens. My problem is that I am in a Pages document, and I press Command-F to do a search. Spaces switches to a different virtual screen because for some reason it thinks the Find window belongs in another screen. The workaround is to move the document into the screen where the Find dialog opens. I suppose the cause is because Pages was originally opened in another screen, and moved, but the Find window thinks it belongs in the original window. Again, to me this is not a feature, but a bug.
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Feb 3, 2012
Safari switches sites on me randomly?
Info:iMac
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Aug 26, 2014
It started a few days ago.... suddenly, the Computer switches off and the Power LED blinks continues very fast.But at irregular times. It seem to me, when I am not working on it. (I have also connected a PC to the same monitor and keep switching the monitor).
Yesterday i was working all evening, and it did not switch off. This morning while start up it turned off.I checked the memory in My Mac and all 16 GB show up. after I push the power switch for a while and turn it off, I can boot up again (except this morning, where I had to restart after the crash)
Info:
Mac Pro, OS X Mountain Lion (10.8.5), Black Magic Extreme HD, GB RAM, 4 TB HDD
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Jul 28, 2009
Now close to once again fighting Apple in court, Mac clone maker Psystar has brought on a new legal team and has even begun steps to publish much of its knowledge about Mac OS X clones. The small PC builder on Monday was granted permission in a Northern District of California civil court to replace its existing legal team with the law firm of Camara & Sibley, a normally Houston-based team that required a pro hac vice order to operate outside of its normal jurisdiction. Why it's choosing new lawyers at this stage isn't fully evident. When it first mounted its defense, Psystar had gone out of its way to seek a legal team that had previously defeated Apple and which was an expert in intellectual property. Since then, however, the attorneys have had their counterclaims against Apple dismissed and were left in limbo when Psystar went into bankruptcy, putting a hold on the case until Apple had a stay on the case dismissed. Whether or not Psystar's previously non-payable debt contributed to the switch in lawyers is equally uncertain.
Now that the company is re-emerging, though, it's not only prepared to rely on new legal representation but on public support. The company sent an e-mail newsletter on Tuesday which promised an upcoming community page and a wiki page. The two would not only provide Psystar's own code contributions for running Mac OS X on non-Apple computers but planned to "explain and perhaps even standardize" ways of installing the software on any modern Intel-based PC. Not surprisingly, the same messages also reiterated Psystar's case for its potential customers and argued that, if anything, its business was doing Apple a favor. "We buy hundreds of copies of OS X legally, from retailers like Amazon and Apple itself," Psystar said. "We're probably one of Apple's biggest customers."
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Dec 2, 2010
I have a late 2007 MBP 15inch 2.33Ghz Core 2 Duo. I have had since new and no problems. Over this last week I have had the same issue a couple of times. The MBP just switches itself off. The first time it did it, it was running on battery (I was using Aperture) and had 60% power available. It would refuse to re-start until I connected it to the mains and then it ran fine.
Then it did the same thing overnight at some point. I had left it connected to the mains (as I always do at home), had shut the lid to put it into sleep mode. When I came back it was switched off. No-one had touched it whilst I was away but yet it had just turned itself off.The only thing that I noticed was that when I started it up both times the little light on the magsafe connecter kept flashing between orange and green. However when the computer booted into OS X both times it showed a reasonable amount of power in the battery.
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Oct 5, 2009
I noticed that my battery cycle (according to istat) switches over at 15%. So as son as it switches over to the next cycle I plug in the adapter to make the battery run a cycle from 100%-0.(I know the cycle in 100%) But it still switches over at 15%, that means that the battery ran only 85% of its capacity. How can that be? Is it possible to reset (delete) battery cycle data?
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May 28, 2010
I am thinking of making the switch to a Mac, primarily because I am sick of Windows and PC's and all their shortcomings. I really cannot afford a brand new Mac, so I am thinking of ebaying it and going for a 2.4ghz early 2008 macbook. However, there are a couple of things I need to know:If the ebay product ships with software pre-installed on the machine, how do I save it in another location while I do a format and fresh install of Snow Leopard, and then load it back on without discs? I have heard that Time Machine backs up apps, but will it restore them to working order on the new install? (I'm thinking of software such as iLife and Office here)
Secondly, are the old style polycarbonate macbooks rugged in their design? I am careful with any laptop I handle, but I do travel with them a lot. I have had 2 dell laptops in my life, and on both of them the hinges and screen border have split right open after barely a year of use, as well as other issues such as audio failure, batterys, chargers and wifi not working right.
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Aug 23, 2010
I have a dead/stuck pixel that one day can be green and one day be red. I dont really know what triggers it, if it can be some different colors I show on the screen? Anyway for hours and hours I've tried these websites that switches color several times each second claiming it will fix stuck pixels, but with no success. What can I do? I've heard that Macbooks have a "outer layer" of some sort on the screen, so you cant use the method to apply pressure on the screen, true? If is was just dead I would have no hope, but as it switches colors at least its alive.. Also, its really annoying as I've to always change background picture to hide the pixel
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Feb 19, 2010
I have a 20" iMac G5 1.8 GHz which has been pretty reliable since new. A few weeks ago I fitted a new Hard-drive (Western Digital Caviar Black 1TB), other than that the computer is bog standard. For the last few days when I start up, the computer switches itself off straight away and I have to press start again. Sometimes it gets as far as the grey screen and sometimes it gets to a complete desktop screen before this happens. This may happen 2 or 3 times and then the computer works fine all day, I can even restart with no problems once it is running fine. As it stands I can live with the problem but I worry that it may get worse. Anyone know what this might be? Could it be related to the new hard-drive? Could it even be related to the cold weather?
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Mar 16, 2012
I have migrated my Mobileme data to iCloud because my iMac supports Lion. However, my wife's iMac, running Snow Leopard cannot be upgraded (if that's the right word) to Lion so cannot migrate. She currently has a .mac email only ID through Mobileme which is functioning OK but my question is, will she still be able to use it when Apple switches off Mobileme?
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Apr 25, 2012
This morning I turned on TimeMachine (I do a weekly back up) and it showed a back up would occur within the hour. When I went back to look an hour later it was set on off. I turned it back on and within a minute it turned itself off. I have a lot of memory available on my standalone hard drive so what the heck is up with this shutting itself off?
Info:
iMac, Mac OS X (10.6.7)
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Aug 30, 2014
Starts to power up from either mains supply or battery, but always switches off after anywhere from 10 seconds to a few minutes. Chimes, usually gets as far as screen coming on etc but then you hear the power cut and it just switches off (sometimes gets as far as login screen). Have tried NVRAM reset SMC etc.
Info:
MacBook, OS X Mountain Lion (10.8.5)
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Apr 2, 2007
I have an ibook G4 (2years old, a part of the battery swap program) that charges normally... for about twenty minutes. Then the light around the charger turns from it's normal "i'm charging" orange to nothing, the light goes out and the ibook switches to battery power. I've just inspected the power chord and there are no strains or tears, the plug at both ends are in good condition and the ibook power socket is fine too.
I've turned the ibook off for a period of time (two days) and reset the power manager... still no difference. The ibook looks and acts just like it should until about twenty minutes into the charge then the light turns off and it's like it's been disconnected. The chord is in correctly, i've even tried the apple extension chord = no joy. If i reconnect the power chord at the wall it's fine, starts charging again... and yes i've tried different sockets on different circuits in the house!
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Nov 25, 2008
In one document in MS Word 2004, the language keeps reverting to French. I try resetting both the default language and the language choice as English (Tools > Language...), however, rather quickly it reverts back to French. This messes up the spell check. What can I do to keep it on English? (With a google search, I did find a 2005 post that mentions this as a systemic problem. But that forum didn't seem to offer a solution: [URL:....] Has this been settled elsewhere?)Second problem, perhaps related. MS Word automatically corrects some spelling as I type. However, in the document with the French problem, the text is being corrected in a weird way. It's not accepting a semi-colon ; next to a word. Instead, it inserts a space between the word and the semi-colon. What's that all about and how do I change it? Are these problems related?
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Feb 8, 2012
I am using Lion 10.7 , I assigned dreamweaver to desktop1 by choose Options > This Desktop when in desktop1. Then relaunch DW and it correctly opened in desktop 1. Now if i open a file using in finder (which is itself assigned to desktop3) on a file that is default to DW then Dreamweaver moves itself to Desktop3.
I thought the point was that we could assign different applications to different spaces and they would stay that way. Are we saying that if a file is opened from finder its default application will be moved and set up of spaces does not apply ?.
Info:iMac, Mac OS X (10.7.2)
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May 1, 2012
My 10 month old Macbook Air 13" battery behaves weird every 4 weeks. When unplugged the MBA switches off suddenly without a warning even the battery is still more than half full. Plugging it in it tells it takes 20 hours for a full charge but never gets full. After unplugging it crashes after some minutes again and goes dark.
The battery' got 178 load cycles and 5675 mAh out of originally 6700 mAh (84%). Did several SMC resets and PRAM resets. I even reinstalled Lion from scratch without changing the battery's behavior. Calibrating the battery isn't possible because it does not discharge but crashes. I tried three different power adapters.
Info:
MacBook Air, Mac OS X (10.7.3)
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Jun 3, 2014
My iMac starts, takes about 10 minutes with apple logo & timer/progress bar then just switches off .. How to get it to the login screen?
Info:
iMac
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Jan 12, 2010
We have a Mac Pro Tower Quad-Core Intel Xeon 2.8 Mhz. with Apple HD 30 inch Display. OS X 10.5.8 with no Raid card. 4 GB ram, 300 GB hard drive, with only 30 GB left to use. A random message comes up asking me: Are you sure you want to shut down your computer? Restart, Sleep, Cancel or Shutdown. I ran Disk Utility off the CD, repaired permissions. Rebooted computer and the message re-appeared after it loaded the OS X. I removed all startup process from 3rd party software. Turned off Bluetooth settings, as I have a wired keyboard and Mouse. What could be happening? No new hardware or software has been installed for 1 year. All OS X updates are current. I attempted to look in the console logs but some of the information is foreign to me.
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Mar 30, 2009
I have a problem on a G5 tower. OSX 10.4.11, dual 2.3gh with 2.5 gb RAM. Every few minutes finder restarts. Even if nothing else is running, the finder window will just close. Other programs seem to run fine.
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May 14, 2009
Is is possible to use MacBook Pro as a External Monitor for a Mac Pro Tower ??If you have a DVI to DVI cable, then would it work connecting the 2 computers together ?
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Dec 10, 2008
I have a Mac Mini set of installation disks, will these work on a tower G4 or do I need to buy a new version of Leopard?
Also can I use any generic IDE hard disk to install OSX to?
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May 31, 2012
This morning my Mac Pro tower worked but seemed buggy. I decided to reboot and went into Restart function. I got the chime, have display of Apple but instead of the spinning dial, I now see the dreaded circle with a slash through it. Not a good sign. I tried to repeat with same results.
Info:
Mac Pro (Early 2008), Mac OS X (10.6.8)
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May 15, 2010
For the new macbook pro users, when going into fullscreen for a youtube video is it normal for the screen to turn greyish momentarily (1-2 seconds) while the graphics card switches? Can anyone check and report?
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Jun 3, 2012
Everytime my mac goes to sleep or i leave it for a while it switches off my wireless internet then i have wait for at least 10 minutes before it ill comeon line again.
Info:
Mac OS X (10.6.8), Using aiport
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