MacBook Pro :: Hot CPU Freezes Its Forcing Hard Restart
Jun 20, 2012
My MacBook Pro early 2011 13" freezes, requiring a hard restart when the CPU temperature stays in the 195 F (as measured by iStat nano) range for more than a few minutes. The fans run appropriately. I am running 16 GB of RAM, most of which is not being used during these 'hot' episodes (according to Activity Monitor). Typically they happen when Mail is trying to connect to iCloud and can't seem to do it. Then the spinning beach ball. Can't force quit or restart from the Apple menu. I'm using 10.7.4 on a dual core i7, 2.7 GHz unit.
Info:MacBook Pro (13-inch Early 2011), Mac OS X (10.7.4), Speck clam shell translucent case
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Dec 5, 2009
Mac G5 ppc OSX10.4.11
Starting up from any boot disk will give me a kernel panic forcing me to hard restart.
Background:
After many freezes I ran disk utility and I get:
Checking Catalog file.
Invalid index key
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
So I use my wife's Imac startup disk to boot it in order to repair but I get the dreadfull death screen (I know how to press the C) I'm thinking maybe it's because her disk if for her Intel proc so I go and buy a copy of disk warrior 4, and same problem.
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Jun 23, 2012
My new 13 inch macbook pro keeps forcing restart. A black box appears and says it the computer must restart. Does anyone know why this is happening?
Info:
MacBook Pro (13-inch, Mid 2012), Mac OS X (10.7.4)
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Feb 3, 2012
In the last few weeks my Macbook has started be begin freezing at seemingly random intervals. It is a 2008 Macbook, not a Macbook Pro or Macbook Air. At first this was only once a day, or once every other day, but it has gotten progressively worse. By today, I can't go more than 2 or 3 hours without it freezing, forcing me to manually restart the computer. The freezing is not application specific; once it freezes with one application, if I try to pull up anything on the menu bar, the menu bar proceeds to freeze. I haven't made any recent major changes to the computer, and it had been working perfectly fine before now. I'm working on scanning it in case it is a virus, but this is seeming increasingly unlikely.
Info:
MacBook, Mac OS X (10.5.8)
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Jun 13, 2008
What does this error message mean? I have had my MBA since Feb, and never had this error. I get the error, in several languages, and the computer is frozen at that point. A restart gets me back up and running until it happens again, usually within; an hour or so. Always while using Safari.
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Dec 5, 2014
Before two weeks I have done a clean install of OS Yosemite in my MBP retina.Â
But unfortunately I have noticed some bugs such as:Â
- When I press Shut down the dock stays the half freezed, not completely disappeared and then the system shut down.
- Its a grey screen when I switch on from sleep
- It has completely freezed 3 times and restarts itself
- The wifi signal has been lost 2 times, in my home using my router wlan.
- The continuity doesn't work with my iPhone 6+.
- I don't know but I think that Mavericks were faster..Â
I have done PRAM and SMC reset but nothing.Â
Info:
MacBook Pro (Retina, Mid 2012), OS X Yosemite (10.10)
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Jun 12, 2009
every 10 minutes something popped up and froze saying that i have to restart my mac book. iz there a virus?? what shud i do so it wont pop up for me to restart every 10 minutes again?
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Jun 26, 2010
Yesterday I was working away at it when suddenly the screen freaked out, there was blocks of color everywhere and the mouse was acting strange (jerky, up was down, down was up etc etc) I had to hold down power to repair it. When it started loading it froze the little circle in the middle stopped spinning and I had to restart it. Then the same thing happened again froze. So I started it in safe mode then restarted again. This time everything was back to normal. But today again I was just using the computer when everything went all glitchy again and same thing, this time when I went in safe mode the screen darkened and a box in the middle said something was wrong and to restart my computer.
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Sep 8, 2010
While surfing the internet the screen goes dark and wont let me do anything but turn off. (see picture)
Anyone else had this issue? not the first time this has happened!
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May 20, 2010
I have a base 15" mbp 2010 model. I wanted to restart my laptop several times and this happened about twice now. I had to force shutdown by holding the power button, but this can't be healthy for it. Here's what happens, I go to apple>restart and then my desktop icons and taskbar, finder bar goes all away so that only my desktop background is showing, and it stays there. I can still move the cursor with my trackpad but me being new to macs, i don't know any keyboard shortcuts to bring up the activity monitor and stuff. Is something wrong with my macbook pro?
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Jun 30, 2010
I put in a cd that my computer was unable to read. I tried to eject it using disk utility but it failed. I read that another option was to restart the computer and hold down command, option, o, and f at the same time to open disk firmware to eject it. instead of actually working, my computer froze at the rstart screen, and i have no idea what to do - and i am unable to insert a disc.
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Apr 11, 2012
When ask to update software and click 'update all' and asked to restart laptop, the screen freezes and I had to force shutdown.
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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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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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Jan 6, 2011
I have a 3.06 Intel Core 2 Duo iMac with Snow Leopard. It is completely up-to-date and has always ran beautifully. I have not installed any new programs lately. Recently, when I go to APPLE > Restart (maybe after an update or just because I like to restart my computer on occasion) the bar at the top disappears, my dock stays up on the screen, and the computer just sits there and freezes up on me. I am forced to hold down the button on the back to get my computer back. Here are the things I have tried:Re-install of the latest update using Combo Update Reset PRAM Repaired Permissions Booted from disk and ran a Repair Disk Complete zero-out of the HD, clean install of Snow Leopard, and reinstallation of everything from a Time Machine backup Nothing has worked...The other problem is that it only happens when my computer is on for several days. If I restart daily, it doesn't happen. So, it makes it hard for me to log-in as a different user for that long to initiate the problem. I think it has something to do with a program that I may open and close throughout the week but I have no way to pinpoint what program it is.
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Jun 25, 2012
it keeps freezing up and when restart it freezes up also
Info:
iMac, Mac OS X (10.7.4)
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Jan 2, 2010
I got my IMac 3 years ago just recently started running slower in the past couple months, nothing too bad though. However just yesterday it became unbearable to use. 10 min to start up, once it was on took forever to open up any files etc. So I did some research online and I decided my best option was to reinstall the OS with my startup disk. I did that and erased all my harddrive (nothing important on it.) After doing that it ran great like brand new. Today I turn it on, it continues to work great for a few hours then it freezes in me. I held down the power button to restart. Turned back on and it was stuck on the white apple startup screen. After 15 min I decided to power it off and let it rest a while. After resting it still won't start up.
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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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Dec 2, 2014
my iMac random freeze and restart, on console i not see any message about kernel panic and etc system clear install ! what's happened ?  Â
log1 Â System Version: OS X 10.10.1 (14B25)Â
Kernel Version: Darwin 14.0.0
Boot Mode: Normal
Model: iMac15,1
RAM details...[code]....
Info:
iMac, OS X Yosemite (10.10.1)
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Aug 25, 2014
Since the last itunes update (May be a co incidence) , my 27" Mac keeps crashing with a white screen and flickering  It then wont restart most times, even when using boot up options such as option, Cmd P+R. even removing power!waiting and restarting etc on most restarts wont work its a white screen.
Info:
iMac (27-inch Mid 2011), OS X Mavericks (10.9.4)
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Apr 8, 2008
Does anyone else consistently experience a black screen and 'nothing' when they request a restart from XP side of a boocamped machine, but not the OSX side?
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Jun 24, 2012
just bought a new macbook air and it keeps freezing on me and asking me to hard restart the computer
Info:
MacBook Air, Mac OS X (10.7.4)
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Aug 30, 2014
Macbook Air was purchased in June. Worked fine the first few months, but has been freezing progressively more often, forcing a shut down. Cursor active but clicking does nothing. Today it has allowed not functionality and froze upon booting up. It isn't used much beyond checking email and surfing the internet. Also, is it true that MacBooks have a one year warranty?
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Nov 1, 2009
I can't figure out why my MPB frezzes up all the time. It's currently running worse then my Win XP. I counldn't even finish this thread before it frooze up again. I tried to run a disk check, that also made it frezze. The only way i can get it to life again is a hard reset.
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Feb 24, 2012
Starting today my 2010 Macbook Pro 2.66 GHz Core i7, OS X 10.7.3 (8 gigs ram) has experienced 4 "hard freezes" where the system locks up, itunes plays the same second of audio over and over, and nothing works (keyboard, trackpad, etc.. all frozen). You can't even make the caps lock key light up. This requires you to hold down the power button to reset. Obviously I'm very concerned that this is a hardware failure... or something is getting too hot. The thing is I'm not doing anything that crazy, no games or tons of programs open.
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Nov 16, 2009
I've been testing this method for awhile to determine if it was possible to boot the x86_64 kernel on the Macbook Air via any process. It looks like it is. References here and here show it is possible to force boot the x86_64 kernel if you have a 64bit EFI firmware. To test your EFI firmware you can use the following: (Source).
Type the following into Terminal:
ioreg -l -p IODeviceTree | grep firmware-abi
If your Mac shows "firmware-abi" = EFI64 then you can proceed. If you see EFI32 then you're out of luck for this particular method.
The rest of the process is detailed at the links included above. I will rewrite this part when I have the method fully working, but for now I haven't been successful.
There are several relevant parts such as:
Quote:
Model (with 64-bit EFI) Byte Position in boot64.efi Old Value New Value
Mac mini(Eary 2009)　0�266DB 0�00 0�80
MacBook Air(Late 2008)　0�266FB 0�00 0�80
iMac(early 2008) 0�2671B 0�08 0�80
included in the comments at this page, but so far I'm stuck.
Update 1:
As an alternate method I attempted to use lipo to modify the mach_kernel to only contain the x86_64 kernel information. A reboot confirms this didn't work so well.
Interesting notes so far from the EFI modification tests:
1) bless --info works fine on 10.6.0, but gives a Can't access "efi-boot-device" NVRAM variable on 10.6.2.
2) You can still modify which efi file is used for boot in 10.6.2 (I fouled one up in a hex editor and rebooted to see if it would fail just to test it), but the bless binary will not show the information the system is configured with.
3) The information at both links above for modifying the boot.efi doesn't seem to work in 10.6.0. It already wasn't working in 10.6.2, but there were some comments about it working in previous versions of Snow Leopard so I went back to an unpatched vanilla install from my install media (used Disk Utility to format the drive before installation) to test it.
Thread Notes:
1) Yes, I am aware that Leopard and Snow Leopard are fully capable of running 64bit programs using the i386 kernel. This is just an experiment for fun.
2) No, I do not have any reason to do this and I know the Macbook Air runs fine with the i386 kernel including every feature of the x86_64 kernel.
3) Yes, I know the Macbook Air only contains 2GB of ram so there is no reason to run the x86_64 kernel.
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Jun 22, 2014
Forcing preview to see downloaded pdf's automatically. Safari downloads these but preview doesn't open it unless forced. My other MB air downloads them and automatically opens them in th media viewer of Safari.Â
MB air 11' OS 10.7
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Jun 17, 2012
I installed a new 500 GB HD on my 13-inch mid 2010 Macbook Pro (since the original crashed). I successfully connected to the Disk Utility via the internet connection and started recovery from a recent Time Machine backup....but, the computer will not restart. It's been stuck in the grey screen with the Apple logo and rotating status bar all night. I shut it down and restarted, but it won't go past the grey screen state. I can't find any answers on the Support Page. Should I have first installed the Lion OS X first and then restored from the Time Machine backup? Â
Also, wondering if all my programs (2011 ILife & IWork and Microsoft Office) will be reinstalled with the back up? (I can't find my installation disks for ILife and IWork :-()
Info:
MacBook Pro, Mac OS X (10.7.4)
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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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Sep 7, 2010
I bought a new internal hard drive for my late 2009 MBP and have completely cloned my existing hard drive to the new one. When I use the new hard drive through an enclosure I am able to boot from this hard drive perfectly, but when I install it into my MBP it won't read properly or something. It loads to my home screen with my dock, but when I try to click something, it just freezes up and I have to restart to the same thing every time. Anyone have any ideas on how this can be fixed?
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