Power Mac G5 :: Try And Restart It Switches Off But Will Not Restart?

Oct 7, 2007

I have a DP 2.5GHz PowerPC G5 which is giving me problems. It is on all the time (server). If I try and restart it switches off but will not restar. Also, if it crashes (only happens once every few months) then it will not automatically restart. I have replaced the internal battery but this has not helped. I have also reset the PMU. Any ideas what may be going on here?

Information:
PB G4 12" and G5 DP 2.5GHz
Mac OS X (10.4.10)

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Power Mac :: After Suspension Of Hard Drive Activity, Unable To Restart It (must Shutdown And Restart)

Jun 22, 2012

when occurs a suspension of hard drive activity, manually or after a period of inactivity, this suspension seems to be incomplete (a ventilator continue to run) therefore my mac (power-mac G5, OS 10.4.11) is unable to restart, no possible action from the keyboard (I must shut down and restart)

Info:
PowerMac G5, Mac OS X (10.4.4), & PowerBook (10.3.9)

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OS X :: You Need To Restart Your Computer Hold Down The Power Button Or Press Restart?

Apr 14, 2009

Whenever I open my mac mini it comes up with the same message "You need to restart your computer hold down the power button or press restart" in four different languages.

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OS X Mavericks :: On Restart Dock Switches To Bottom And Loses Selected Applications

Sep 6, 2014

When I restart Mavericks, the dock returns to the bottom of the screen and loses the application icons I've previously posted into the dock.

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Mac Mini :: Restart Message - Hold Power Button / Press Restart Button

Apr 29, 2009

I have just shipped my Mac Mini to its new home and I've had reports that the panic error is appearing on boot up: "You need to restart your computer. Hold down the power button for several seconds or press the Restart Button." This screen appears on the blue window just after the grey apple screen has disappeared and does not get as far as the desktop at the same point each time. We have tried to reinstall mac OS from the original install disk but holding the "C" Key or the "Option" Key down on restart doesn't boot from disc. Is there a way you can view the Kernel Panic log before you boot into Mac OS so we can try and pin point the source of this problem. I'm wondering if this could have been the result of the shipping that has caused some hardware to come loose.

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MacBook Pro :: Random Clock Restart On Restart On Early 2009 MBP?

Feb 2, 2010

I restarted my computer, and when it booted back up the clock was reset to Dec 31 2000. I did not change the clock, and my control settings are password locked.

Should I be concerned about this, and has this happened to anybody else?

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Power Mac :: G4 1.25 Request To Restart When Booting

May 9, 2012

the computer when it get the grey screen show a meesage the "push the restart button" to reboot want to shut down and restart  the computer

Info:
iPhoto '11, Mac OS X (10.6.7)

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MacBook :: Will Not Power Down / Restart (Or Update)?

Jun 27, 2012

For some bizzare reason my Mac wont restart or update, not to sure when the problem started as I normally just put it into sleep! But basically when I click update it says the updates need the Mac to be restarted, I click ok. It basically logs out and goes to the Username screen to login. Same story when trying to restart/shutdown; just goes to the login screen. 

I'm tempted to do a OS Wipe and start Fresh! However it's going to take 3 hours to download the latest OS! Patients isn't my strongest point ! 

Info:
MacBook
Pro, Mac OS X (10.7.3)

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Power Mac G5 :: Not Respond To Shutdown Or Restart Commands

Oct 6, 2007

I have had this problem for the last year but have worked around it by manually shutting down the system. My mac will not shutdown on command or restart during a program update or by going to the apple and trying g to restart. I have tried on numerous attempts to find a related topic but there is none to my knowledge.

Information:
Powermac G5 2.0 dual
Mac OS X (10.4.10)
3.5 gigs mem

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Power Mac G5 :: Restart Keyboard Shortcuts Don't Work

Nov 2, 2007

For some reason, the keyboard shortcuts on my computer don't work. Every one that I try just continue on to the login screen. I press them right after chime..

Information:
powermac g5

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Intel Mac :: Power Failed During Update Now Won't Restart?

Feb 5, 2012

Had a power failure while the iMac was doing updates. Now I have a white apple screen and the grey spinning wheel on start and that's all I get. What do I do now?

Info:
iMac, Mac OS X (10.7.3)

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Power Mac :: Keep Getting A Kernel Panic (You Must Restart Computer) While Using G4?

Apr 2, 2012

Out of the blue I keep getting a kernel panic (You must restart computer) while using my G4. All I use it for is word processing and internet browsing. Seems to happen when switching between windows.Here is my most recent crash log reports: 

Mon Mar 26 21:27:00 2012  
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000002B154200 PC=0x00000000000ACD04
Latest crash info for cpu 0:
Exception state (sv=0x2708C280)

[code].....

Info:
g4 desktop, Mac OS X (10.4.8)

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PowerPC :: MAC Can't Be Activated Again And Have To Trip The Power Switch And Restart

Jul 21, 2009

I have a G5 Duo 2.7Ghz with 4Gb of ram (supplied with 2Gb, 2Gb added later).
Sometimes when it goes to sleep it can't be activated again and I have to trip the power switch and restart. When it goes to sleep the machine begins to run flat out as if it was about to take off!

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Mac :: Hold The Power Button Down And Then Restart - MBP Won't Wake Up After Sleep?

Jan 29, 2010

Sometime when I stop using my MBP for a minute or so, the screen goes black and won't wake up. I can see that the lights are on the keyboard and it's running but won't wake up. I will have to hold the power button down and then restart. Does any one know how to fix this? It's starting to do it more and more ofter.

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Power Mac G5 :: Reset Date And Time Message Appeared On Restart?

Dec 11, 2007

I installed Leopard about 3 weeks ago and have been very pleased with it; however, since then every so often and when booting up my G5, it shuts off again. I boot again and a small window appears asking me to reset the date and time. Each time this happens I am able to reset the time and date correctly in System Preferences. The computer is about 3 years old so it may be the internal battery and nothing to do with Leopard. Or, could it be a bug in Leopard?

Information:
Dual 2.3 GHz PowerPC G5
Mac OS X (10.5.1)
3.5 GB DDR SDRAM Apple 20 inch. Display

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PowerPC :: Dialog Box Came Up With Power Symbol - Saying Needed To Restart My Computer

Mar 4, 2009

I've been using macs all my life but have never run into this problem. My ibook g4 just recently going crazy on me. I had it running then this dialog box came up with the power symbol in it saying i needed to restart my computer so i did as it said.

After it chimed letting me kno it restarted the gray screen came up and i had the ? folder pop up. So i looked around online and the majority said it was my hard drive. My computer also had a bad battery it wouldn't hold a charge and the ibook itself had to be plugged in at all times. My ac charger pin broke (the part that goes into the computer) so i bought a new one a 45w but just recently finding out i need a 65w! But finally my computer does not turn on at all now. Before i go and buy a new hard drive and battery and charger.

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OS X :: Macbook Pro Freezes With Msg Restart Computer By Pressing Power Button

Apr 8, 2009

I have a macbook pro, bought it May last year(2008). I don't know much about computers, but I loved the transition between pc and mac, had no trouble with it, loved to work with it, until now. I had noticed it became slower like 3 weeks ago, and a week ago, it started to freeze up on me followed by a message that said please restart your computer by pressing the power button and the screen becomes dark. When I try to restart it again, it takes a while because it shuts down again and again, until the 10th time it works. The store told me to clean intall, which I did yesterday, it seemed to have worked, it was faster for sure, but today it happened again, 3 times! Has this happened to anyone? Does somebody know what to do?

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PowerPC :: G4 Not Booting - Hold Power Button And Restart Computer

Jun 3, 2009

Got a tricky one here: powerbook G4, 1.25ghz, 1GB RAM (2x512), 80gb HD, APX, 15" LCD, serviceable battery, SuperDrive, OS: 10.4.11. It was brought to me with a boot problem: Computer turns on, gives the start up sound, backlight comes on, apple logo shows, spinner spins... then you get the dimmed screen, large option icon and "You must hold the power button and restart your computer": a kernel panic. I've seen this a few times before and the last time, I fixed it with a new hard drive and the removal of RAM from a bad ram slot.

What I did was:
1) Replaced existing 80GB HD with a backup 30GB drive. Then booted with a Tiger CD (the computer won't start with my disk warrior cd, nor with a tiger DVD). I was able to install Tiger and restart the computer. But the airport card doesn't show up. I tried a known good airport extreme card and this too has not shown up.
2) I hooked up the 80GB drive to my PC via MacDisk and checked it. Sure 'nuf it had loads of problems. MacDisk went through and fixed it (I'm not sure what the problems were as I'm new to MacDisk and don't know what it's looking for and fixing when it does).
3) With the computer running the 30GB known good HD, I started having the same kernel panics so I removed the first RAM chip (512MB) and tried to reset the PRAM.... here's where it went wonky. (I know, only change one thing at a time...)
4) As I said I tried to reset the PRAM (Option, Command, P, R, at start up). While I can get the computer to not boot, it won't restart. I don't know if this is just unique to this machine. Next I tried to reset the NVRAM and again got nothing. The screen wouldn't come on at all. After about three or four resets, the computer did start in Open Firmware mode. I reset the NVRAM from there and restarted (reset-nvram, reset-all). Still nothing on restart.
5) After trying to start it 15 times like this, I swapped the bottom RAM card to the top slot and removed the airport card (again, I'm stupidly trying to change two things at a time). BAM, computer boots... I put back in the 80GB drive that's been "fixed" by MacDrive and BAM, that boots fine too.

So then I put back in the airport card and it will boot, but won't recognize the airport card. I've re-seated it about a dozen times and have used terminal cleaner on the card and on the socket for the ribbon cable from the card slot to the logic board. As it sits, I can't get the airport card (either of the two) to show up at all. I did realize that the open firmware did reference a problem, but I forget the code now and when I looked it up, the references were to a failure of the airport card, but there were also more general references, so I can't be sure.

I'm thinking now that it's the airport card controller on the logic board, the bottom RAM slot and a corruption of the hard drive. Yes, there was a history of moisture into the device and I think a drop in it's past too. I'm the Mac repair technician for the people at the local bike shop, so I get to trade my repair work for their bike repair work. The problem is that they ride their laptops like their bikes, hard and greasy. I'm really wondering about ways to get the airport card back up and running. Or, baring that, a good card-based wireless adapter that I can slide in.

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MacBook Pro :: Get Error Saying To Push And Hold The Power Button And Then Restart

Mar 21, 2012

I just installed 2 4 gb of ram in my unibody mac book pro 13"

I now get a error saying to push and hold the power button and then restart. The message keeps coming back up every time any thoughts ?

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Power Mac :: Booting To Restart Window With White Text Message

May 22, 2012

Cloned unformatted HD in power mac g4 with macbook HD, on start up grey window with apple logo then "you must restart window" with white text " CPU 0 caller.... we are hanging....appears behind, tried command options P R but wnt let me type, tried using macbook disk but just loads up with the restart window and text and also tried removing the ram and starting up with one an a time but all start up with same "restart" screen.

Info:
PowerMac, Mac OS X (10.4.2), G4 mirror doors

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Windows On Mac :: Bootcamp Restart - Option Won't Work After Windows Restart?

Apr 29, 2007

This is a problem I've noticed on two Macs I currently own. First I had my 20" iMac with Vista installed, and currently I have a 24" iMac with XP installed. In both cases, when I'm in Windows and need to restart (for whatever reason) and want to go back into Windows instead of OS X, the Option key does not function correctly to bring up the OS select screen, and instead will go straight to OS X, as that is the default OS I have set up to boot into.

So basically, if I restart from OS X, the Option key works fine and I can choose to go into Windows, but restart from Windows and I have no choice in the matter, it makes me go into OS X. Any idea why?

My first thought is that it has to do with the fact that I'm using Apple's bluetooth keyboard (and mouse), but once the computer has actually restarted, why would it matter? Does the computer remember the BIOS from Windows when it restarts, and therefore fails to recognize my bluetooth? For the record I have to turn my keyboard off then on again when entering windows to get it to be recognized and work, but not the mouse, which works fine.

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MacBook Pro :: Getting Message Of "you Must Restart Your Computer" But It Will Not Restart/

May 12, 2012

I was using garage band when the screen popped up saying that i need to restart my computer. i tried holding down the power button but the screen is frozen. the computer is making a quiet clicking sound. if i close the laptop the light stays on and the sound persists.

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MacBook Pro :: Not Booting Properly - "need To Restart Computer - Hold Down Power Button"

May 23, 2010

My Macbook pro is not booting properly. When I start it up, it goes through the normal process and gets to a point where a screen comes up telling me: "You need to restart your computer. Hold down the Power button for several seconds or press restart now" This happens every time. I tried to start in safe mode and holding down the option key and selecting the mac partition. Neither would work.

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OS X :: Cannot Locate "restart Automatically After Power Failure"

Apr 2, 2010

My Mac is OS X version 10.5.8

It powers down constantly and I was advised to check the box that restarts it automatically after power failure in order begin to ascertain what the problem is.

I cannot find the darned box to check!

I looked in the "energy saver" category where my computer tells me the box is, but there's no option anywhere to be seen.

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Mac Pro :: Switches Off And Power LED Starts Blinking

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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MacBook Pro :: Switches Itself Off / Was Running On Battery And Had 60% Power Available?

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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MacBook :: A1181 Starts To Power Up But Switches Off

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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PowerPC :: Light Goes Out And Ibook Switches To Battery Power

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 8, 2010

I can't start the mac. I push the button but it freezes on the apple logo and doesn't open the system.

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PowerPC :: G4 Always Asking To Restart - What To Do

Dec 21, 2008

I encounter problems on my Mac. I am currently using OS X 10.4.11. My system is PowerBook G4 1.33ghz. When I am doing my work or surfing the internet. There will be a logo pop up on the whole screen looks like the On Off Button switch on my PB. Than there will be some message that I need to restart my Powerbook. I have tried so many things, like changing my hardisks, reinstalling the OS.X but it still doesn't work. Everytime it happens all my data that I have done half way will be gone.

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