MacBook :: Freezing At Random Intervals Forcing To Manually Restart
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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May 5, 2012
This annoying bug is driving me crazy when I'm listening to music or watching a youtube video.It seems as if some process is interfering with sound output. I've already tried eliminating the problem by closing all apps, uninstalling perian, quicksilver, to no avail. Is there anyway to see which processes are using sound output at any given time?Â
Info:
MacBook Pro, Mac OS X (10.7.3)
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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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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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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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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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Nov 10, 2009
For the past month or so, I've started to have some really weird problems with my Mac Pro. Applications will suddenly stall out or freeze up (endless rainbow wheel), and Force Quit won't work to quit them. It happens most often with iTunes and Finder, but it's also happened with Firefox once or twice. The whole system doesn't freeze or stall - I can generally still use another application (i.e. if iTunes stalls and won't quit, I can still continue to use Firefox, etc.), but generally if I leave it this way too long another application with eventually freeze, forcing me to shut down by holding down the power button (Shut Down won't work in these cases).
Occasionally when this happens, I have left my computer alone, and sometimes it unfreezes or unstalls by itself, but this is usually hours later, and sometimes it doesn't do this even after hours of waiting. I ran a hardware test thinking that faulty RAM might be the issue, but the hardware test said everything was OK. I don't know if I should believe that or not. I've tried repairing permissions and verifying all disks, internal and external, and everything checked out OK. What is going on here? Why do things keep freezing/stalling and forcing reboots?
Here is what I've got:
2x2.8GHz Quad-Core Intel Xeon
2GB 800MHz DDR2 FB-DIMM
Running Mac OS X 10.5.8
I have really normal stuff installed - MS Office, Photoshop, Ableton, etc. No really weird third-party applications other than some really simple stuff. I'm not the type to overwhelm my computer with a bunch of crap.
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Mar 4, 2012
My Macbook keeps freezing and I have to manually force a shut down. What do I do to fix this?
Info:
MacBook, Mac OS X (10.7.3)
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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 11, 2012
I got a 2008 white macbook and lately i have been getting a grey popup that tells me to manually restart
[code]...
Info:MacBook (13-inch Early 2008), Mac OS X (10.6.8)
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Oct 5, 2009
my late 2006 macbook running 10.4.11 has been acting very strange since yesterday. first, it freezes while i'm recording something off of isight and i have to restart. works fine for 30 minutes until it randomly restarts (probably due to heat) and takes me two reboots and some time to fix it (i have to put an ice pack to keep it cool). then later in the night, it randomly restarts again and takes two reboots to get it back. then in the past hour, the screen has frozen, it went into a kernel panic and it randomly restarted again while i was trying to post this the first time. and also, it's been running very hot despite having no applications running.
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Aug 29, 2014
My macbook onward restart when waking up from sleep, but no error message appear . Plus all my program and website reload back as before. Only problem is why it restart occasionally and it is normal. I don't have that symptom on earlier. Now using maverick 10.9.2
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Jun 25, 2010
I've had my i7 iMac for months now, and it's acted perfectly with no hassles or quirks at all-- until the past couple weeks after I installed 4gb of kingston ram.
The problem occurs whenever I enter fullscreen mode with flash programs-- rather it be fullscreening a youtube video or a livestream. It's more of a 2-3 second freeze, rather than a full-scale freeze. After the freeze, the computer acts normal again, but iStat menus shows one of the lynnfield's processing cores to have a sudden spike in usage for that small period of time (a spike that reaches to the top of that specific core's capacity)
It's not an everytime type of deal, and I only get it maybe once every other day, but it seems to be happening after installing the additional ram. System Profiler has the ram as running fine, and repairing disk permissions doesn't do any help either. I highly doubt it has anything to do with the SMC or PRAM either.
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Apr 17, 2012
For some reason safari is acting weird. It will let me log onto gmail but as soon as i try to click an email it freezes up. Also when i click a link in vimeo it freezes up as well. I have to force quit and then re open the broswer. I use firefox to get around it but sometimes that acts up too. Do they need to release a new patch or something? I jsut want to know why did this start acting this way. All my software is up to date jsut to let you know and accessing safari on my ipad works jsut fine as well. I am using a imac to try to access my email and thats where the problems seem to be.
Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)
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Jul 1, 2012
Is there a way to manually lock an iMac screen? Like you can on Windows' PC's, I'm wanting to type or click a function to lock my screen and go to the log-in screen instead of waiting for the alloted time to run out.Â
Info:
iMac, Mac OS X (10.7.4)
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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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Dec 1, 2010
What would cause random restart? Maybe one in 15 times, when I lock my display, I will find that in the morning, my computer had restarted without my doing. Irritating as I rely on it for an alarm clock and as I have to log in, the alarm doesn't restart in the event this happens (almost overslept an exam today because of this). I am on a late 09 mb with 10.6.5 running.
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Oct 13, 2010
Recently ive been having a couple of issues with my mac; the thing is i havent used it in a few months.
anyway lately when i have been using my computer if i dont use it for a few minutes it will freeze, causing me to force it to shut down. and the other issue is kinda hard to explain but for some reason when i am gaming the picture has been acting up lately; i can see almost perfectly fine but there are vertical lines all over the screen - about 2cm long...the lines only seems to pop up on 3d imaging.
i have an iMac PPC G5 with 512mb ram
like i said i have not used this computer in a while
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May 1, 2012
So I even followed some tips from a previous discussion up here somewhere in this forum and still haven't succeeded.... When I tried the Option key at the startup chime, I got an padlock icon and underneath it there was a box like to enter a pass code with an right arrow tab next to it...
Info:
MacBook Pro, Mac OS X (10.6.6)
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Nov 15, 2009
Everytime I restart my computer my clock sets to some random time! I've never had this problem before, and no matter how many times I set it back it always changes. That and my weather widget always changes to some random city.
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Sep 30, 2009
I just brought my computer from work to my home and now it's freezing. The G4 running osx 10.4.. freezes about 15 seconds after each restart. The screen is still active but mouse/keyboard is frozen. If it is kept on after a few minutes the computer starts to get very loud, with all the fans working overtime.
I've tried opening it and making sure everything is seated and plugged in well.
Tried different mouse and keyboard.
Tried running disk permissions.
Tried starting to run scripts but can't get to then before the comp freezes.
Tried safe mode but it still freezes too.
Any ideas or do i need to go back to the office and get the restore disk and start over reinstalling anything?
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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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Sep 23, 2008
My friend has an iBook that keeps freezing. This startup screen appears every time. Though I have seen it before, it never reoccurred for me.
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Dec 4, 2014
My 2011 21.5 inch iMac keeps freezing. Strangely, the trackpad works but nothing on the screen reacts to moving the cursor around or clicking anywhere. requiring a restart (using the power button on the back). Â
When I then restart, I get an immediate error message saying "A graphics problem has been detected" and enables me to report the problem, which I do.Â
However, this happens several times a day and only since an upgrade to Yosemite and I have tried a software update.Â
Info:
iMac, OS X Yosemite (10.10.1)
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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 1, 2009
i recently downloaded an app called Time machine editor. It is supposed to have the ability to set the time machine back up intervals. So I sent it to back up once a day. Problem is that when I go into time machine, I see that it has multiple times of the day it backed up (when I only expected to see e.g. 8:am)
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Feb 4, 2012
My iMac is making a sound that seems like a "pop" every few minutes. It seems like a notification, but it isn't one. It never did this in a year, but it started two weeks ago. It's really annoying. I called the Apple Support but they didn't manage to help me out.
Info:
iMac (21.5-inch Mid 2010)
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Jun 27, 2012
I get a random door bell sound at random times, even if the IMac is off. What do I do?
Info:
Mac OS X (10.6.6)
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May 7, 2010
I have Powerpoint on the PC, and there you are able to rehearse and save timings, i.e; say you have a project and have music in the background, you can go to the next slide depending on when you click 'Next' or whatever? Get what I mean? So you're able to rehearse timings so you don't have to control it, it's kind of like a movie. Let me know how to do this with Keynote 09'.
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