IMac :: System Completely Freezes At Random Times

Feb 4, 2009

The last 2 days my iMac has completely frozen on me at random times. Frozen meaning, no mouse movement, no keyboard activity (caps lock not responding) and no OSX activity whatsoever. Temp at the time 41C, CPU Usage at 21% or smth, Fan speed at around 1200rpm. However, I don't get the infamous kernel panic error. I haven't changed anything hardware wise. I did have a couple of months ago the graphics glitch problem. Last software update was the iWork one. iMac is Aluminum 20' with C2D 2.4 and ATi 2600 Pro.

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Info:
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Nov 24, 2010

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Apr 2, 2010

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Apr 11, 2009

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Dec 2, 2008

I'm using a Macbook 13" and am running 10.4.11.

So the problem that I'm having is that at random times I lose connection. At the same time the PC-s that are connected to the same network have connection, plus the ISP said that everything seems to be fine on their side. So there seems to be an issue with the WiFi on the MB. It just loses the connection and can't find it for about a minute and some times it takes about 5 minutes for it to reconnect to the network. And the problem isn't limited to only one network, but actually happens in different networks. It started as a minor inconvenience, but now it's starting to really bug me. And it seems that I'm not even making it up: [URL]

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Jul 30, 2010

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Dec 6, 2009

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Mar 16, 2010

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Software :: Experienced Kernel Panics At Random Times

Feb 14, 2009

I have experienced these kernel panics lately, at completely random times, I don't know what the problem is. All I really have so far, is the panic.log.

My specs are:
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1gb ram
80 gb hard drive
1.25GHz PPC G4

[Log]

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OS X V10.6 Snow Leopard :: Screen Goes Black At Random Times?

Jun 6, 2012

iMac 27 the screen goes black at random times. If left for a time and by pressing ctrl, Shift Eject, the screen comes back and can remain on for the rest of the day. However, the next day the same thing happens.  

Energy saving set to - Hard disk never sleep, Screen sleep in 15 mins.

Info:
iMac (27-inch Mid 2010), Mac OS X (10.6.8)

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OS X V10.7 Lion :: Kernel Panic When Watching Videos (and Other Random Times)?

Mar 27, 2012

I'm aware of the Airport issue mentioned on these forums (and have tried the kext fix for that without any luck).  I have KPs when watching 4+ minute long videos on Youtube (have no issue using iMovie for longer videos or watching videos from my own harddrive), sometimes when the screensaver is on or shortly after the computer goes unidle, and sometimes for no apparent reason. I've already had 2-3 KPs in the past 4 hours. This is my first Mac and not at all what I was expecting.  

Sometimes the screen will flicker rapidly, other times I will get a black screen, pink screen, or the screen will "glitch" and move halfway to the left (right is now on the left and left on the right). I can sometimes delay the crash if I pause the video (the screen starts to twitch or have "lightning" flashes across parts of it) but it will eventually crash anyway.  

I usually use Firefox but have had the same crash in Safari so it's not browser-related as far as I can tell. 

[Code]....

Info:
iMac (27-inch Mid 2011), Mac OS X (10.7.3)

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Jul 3, 2012

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Info:
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Apr 26, 2009

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IMac :: Replaced HD But System Freezes On Startup

Nov 10, 2009

I have a early 09 iMac 2.93Ghz with 6GB of ram. About a month ago it kept freezing at the grey startup screen. I took it to Apple and two trips to Apple later my hard drive was replaced. One month later here I am and the problem is happening again, the same exact problem. I turn on the iMac it goes to the grey screen, the beach ball "like" thing starts spinning and then it freezes in the middle of it and I have to do a hard power off(hold down the power button). Any ideas!? I already scheduled a appointment with Apple tomorrow afternoon but its a royal pain in the a** to keep shuffling my iMac between home and the Apple store. This will be my 4th trip in for the same problem, btw.

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Sep 9, 2008

In the last week or so i have been experiencing lock ups every 15-20 minutes, which last for around a minute. The problem has only presented itself after I moved to a dual monitor configuration, although this may be coincidental, given the nature of the problem. The problem only seems to occur when the system is reading from from the main hard disk however testing the disk (and performing a directory/file test) says that the disk (and all others in the system) are functioning properly.

Curiously, any audio playing at the time, regardless of the application it originates from, continues to play while the rest of the system is unresponsive. It also appears as if the keyboard and mouse are disconnected during this time, and the power lights on each begin to flash, and the Caps lock key no longer lights up. I would like to avoid replacing the system disk if at all possible, as i have already had to do this three times since last December, when i purchased the system, due to drives developing faults.

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Feb 8, 2010

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May 25, 2010

This is an issue I've come across with Macs the last few years & it's only taken me until now to raise any question as to why. It's not specific to Snow Leopard.

Sometime after using my Mac for a while it will just completely freeze up without any explanation why. The CPU is below 50% and still has around 100mb free memory. Eventually if I leave my machine long enough it will get to the state where I can quit a few apps, but it still be awfully slow until I restart the computer.

I admit that I very rarely shut my computer down, most of the time just sleep repeatedly for as long as 2/3 weeks... This isn't a specific issue to the machine, I've experienced this on my old iBook, iMac & now MacBook Pro.

while using iphoto

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IMac :: System Freezes - Can't Move Mouse - Chocking On Audio

Aug 30, 2009

I have late 2007 Mac mini and I have Snow Leopard installed and I was simply watching a Youtube video and then all of a sudden the entire system freezes (couldn't move the mouse) or anything and started choking on the audio (replaying a bit over and over)... had to manually power it off. The hard drive was replaced several months ago at the Apple Store... so I doubt it's the HD. The Mini is back on now of course... it's running fine, but I've never seen anything like that before. Anyone else ever have this issue?

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Mar 25, 2010

I have a 20" iMac mid 2007 2.4Ghz, 320GB, 2Gb machine running Snow Leopard. Today I turned it on and it was running fine. But around three hours of using it suddenly froze. I had to force the turn off using the power button. When i turned it back on it took about 4 mins to get to the login screen. Once I logged in the spinning wheel came up and the only think that loaded was the Spotlight sign. This kept happening until about the third time of turning it off and on. When it finally completed login. But it is now extremely slow and it just about freezes when I open more than one application.

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Oct 13, 2009

Since I use Snow Leopard I get randomly (around 1 to 10 ) freezes. When I get it I can click some applications but can't make changes in it. The beachball keeps spinning for some seconds and after the wait I can just continue working. I first thought it was Firefox, because it almost everytime happens when I am browsing the web, but I get the same with Safari.

It's getting verry annoying now :-(

I already checked:
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Repairs my 1.5 year old mbp already had:
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Apr 23, 2012

I am getting random multiple freezes of programs and finder  10.6.8  imac11,1, 2.66 intel core i5, 27inch requiring a restart.  Doesn't seem to matter what the programs are running and sometimes can't get a program to completely quit with force quit. 

Info:
iMac, Mac OS X (10.6.8)

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Jun 30, 2014

I just got a MacBook last week, and am running 10.9.3.  Twice so far, I've been using the computer and the UI ceases to respond:  no response to keypresses, no response to the trackpad.  The only way out seems to be a hard reset of the computer. This is a brand-spanking new Mac, although I have installed QuickSilver and Firefox.  Have there been any issues with freezing on 10.9?

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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 ?   

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Info:
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Oct 4, 2007

My girlfriend has a 17" G4 Powerbook - she recently bought it second hand. It's one of the late models, with a 1.67 GHz processor and 2GB of RAM installed. It runs like a dream, except for one thing - it has a propensity to freeze occasionally. They're not kernel panics - they're hard freezes, where everything locks up completely. Can't move the mouse, can't force quit, nothing - the only thing to do is switch off and on again. I've looked through the logs and can't find any crash reports, so I'm at a loss to what's causing this. The only lead I have is that it only seems to happen when the machine's running on battery - it's never frozen when the power cord's plugged in. I thought it might be overheating, but it froze this morning after only 5 mins of use, so now I'm stumped.

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May 18, 2012

My macbook pro is just year old when using safari it is slow and takes time to load pages and sometime it just freezez

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MacBook Pro, Mac OS X (10.6.8)

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Oct 2, 2006

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Dec 13, 2009

For a few days now, my 13" MBP (purchased in August; painfully clean-install upgraded to Snow Leopard in October) has been freezing into spinning wheel mode randomly every few minutes. It would seem that this happens particularly often in web browsers (but also when no browsers are operating and I'm typing away in Text Edit or chatting in Adium and Skype). When the browsers are on, the FlashPlayer would occasionally crash. No matter what app froze first, whatever else I click on also freezes.

The freezes happen most frequently after the computer has been to sleep and woken up by opening the lid. The wheels go spinning for up to two minutes, and then everything goes back to normal (for up to 3 mins before freezing again). The longer the comp operates after that, the rarer they become, and after a few hours they rarely happen at all (then again, some times they do anyway). On some occasions, everything freezes so badly I need to hard-reset, and then it takes the comp upwards of 15 minutes to reboot - and then everything keeps freezing, of course. Contrary to other reports of similar problems here, no CPU jumps appear to be happening during the freeze. I tried:

- Running Disk Utility after booting from Snow Leopard . Some permissions (which in forums here were referred to as inconsequential / not related to freezes) were repaired; HD in general "seems to be ok."

- Running RAM tests (with Rember, supposedly updated to Snow Leopard). Everything seemed fine

- Getting rid of the ARD agent (which was related to some of the permissions mentioned earlier)

- Stopping Bluetooth (as someone here with a similar problem thought it helped)

- Installing the Beta Adobe Flash Reader (same as above)

Nothing helped. I really don't want to take it to the lab; I live in Israel and the comp was purchased in the States, which means that the only licensed lab here reserves the right to keep the comp for up to 26 working days

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Safari :: YouTube Video Completely Locks Up Browser And Freezes

Mar 20, 2012

It seems whenever I launch a youtube video, there is a tremendous lag that occurs for a good 30 seconds before my video is able to be seen. It completely locks up my browser and freezes. Thought it was my iMac at first, buy Firefox works fine. I reset everything on Safari and still nothing.

Info:
iMac, Mac OS X (10.7.3)

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