IMac :: Random Freezing Upon Fullscreen Flash / Fix It?

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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IMac :: Screen Freezing When Fullscreen Video And When Running?

Jan 4, 2011

I purchased a new 27 inch 2.8 imac 2 months ago I'm having problems with the computer/screen going black (sometimes grey with vertical lines) and freezing.

This happens frequently when I'm playing World of Warcraft but has recently started to happen when I'm watching youtube videos in full screen. (Do you think its the graphics card?) I originally ran WOW in bootcamp but I had this problem in Windows as well. The only thing I can do when this happens is force the computer off. This happened so often that something got damaged and I had to reinstall OSX. Since this incident I have not reinstalled Windows via bootcamp.

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Safari :: It Keeps Freezing In Gmail And On Random Sites?

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.

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

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OS X :: Random Computer Freezing / Weird Display When Gaming

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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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.

MacBook, Mac OS X (10.5.8)

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OS X :: Late 06 Macbook / Freezing, Random Restarts, Kernel Panics, Running Hot?

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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Intel Mac :: Get A Random Door Bell Sound At Random Times?

Jun 27, 2012

I get a random door bell sound at random times, even if the IMac is off.  What do I do?

Mac OS X (10.6.6)

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OS X :: IMac G3 OS 9 - Put Some Random Videos?

Dec 10, 2009

I recently was given a G3 iMac (Slot Loading), and was wondering what I could do with it. So far, I'm using it as an MP3 player, and I put some random videos on it, but not much else. I'm planning on doing a youtube series about ways to use an old Mac, but theres one problem: The iMacs screen is difficult to record with a camera, (scan lines) and there are not video-screen-capture programs available for OS 9. I know this post seems confusing, but basically I'm wondering if anyone can suggest,

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PowerPC :: IMac G5 Random Hibernation?

Oct 23, 2008

I recently bought a refurb iMac G5 with Os 10.4.11 - It has worked fine and now all of a sudden it will randomly go black as if hibernating and takes a few moments to come back on. It doesn't do it often, usually when I'm playing a video clip on the web for some reason, but not always.

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IMac :: Screen Turning On And Off At Random

Aug 7, 2009

I have a 24" 2007 iMac, the first aluminum ones, 4Gb of Ram and a recently upgraded HD to 1Tb (from a 320Gb failed drive). Recently, I have noticed that under some active usage, such as playing World of Warcraft or Excel, the screen will start to turn completely off for 10 seconds, and then back on for 10 seconds. It will continue to do this for about 3 hours, turning on and off every few seconds or 15 seconds. It will mostly turn completely dark but would also sometimes flicker. The curious thing, is that if I continue to keep playing, the screen would cease doing this after about 3 hours and then be completely normal and fine, but the next night.

The symptoms would repeat itself, and would consistently go away after active usage (3 hours or so). Imagine this, as if the iMac itself needs to be "warmed up" for 3 hours before normal usage. It would also appear that if I hit the machine (or tap it), this may sometimes bring a dark screen back to life for a few seconds. I plan to bring it to support, but I just want to get some ideas from you guys as to what this can possibly be.

Some of my guesses:
1) It cannot be software as physically hitting it or my dog barking would affect the rate and speed of the random turn Ons and Offs.
2) It could be a loose connector from my recent transportation of it while upgrading my HD, but then why would it become normal after 3 hours of usage?
3) Maybe something to do with RAM or video RAM? It is faulty, and thus only prolong heavy usage would "run it in" for the session? After not using it for a while, it goes back to its failed state?

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IMac :: Random Artifacts / Glitches On The Screen?

Sep 15, 2010

I've had my 27" iMac (3.06GHz) for a few weeks now and yesterday I noticed some weird artifacts appearing on the screen, very randomly.

They will pop up all over the screen but if I "Show desktop", they will go away for a bit but sometimes reappear again in different areas of the screen. I restarted the computer but that only temporarily fixed the problem.

Anyone know what's causing this and how to fix it?

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IMac :: New 21.5 Inch ... Getting Random Black Screen

Sep 24, 2010

The screen randomly turns black without any major reasons. It doesn't seem to be a sleep mode/screen saver thing as the music continues to play on. I can adjust the volume or pause the music with the keyboard but the screen just won't turn back on. I have to shut it down using the power button and it happened several time the last couple days. Anyone else experience the same thing and got a solution?

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Software :: IMac Shuts Off At Random And Not Reboot

Jun 28, 2008

I have a G5 iMac, 1G ram, with three external HD, a MIDI keyboard, and an all-in-one Canon print/copy/scan, running Leopard. Lately, my iMac has been turning off seemingly at random, like someone has hit the power strip (although other things plugged into the strip stay on). Sometimes it will reboot when I turn it back on, sometimes not. When it doesn't, it will get partway through startup, then turn off again. There is no apparent pattern to the point during startup where this happens, it's different every time. Sometimes, it barely spins the HD before going dark again.

I took off the back and checked the power supply LED. It says the power supply is OK. I rebooted via the internal power button, and everything was fine for a couple of days. I set the preferences to "reboot after power failure" so it will reboot when I'm at work. I can go through the Time Machine backup list and see how many times it shut down and rebooted during the day (TM backs up once per hour, so when there is a significant length of time between backups, I know it shut down for awhile). The only recent addition is the installation of MoneyWell software, but this app isn't always running when the comp goes black.

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OS X Yosemite :: WiFi Will Drop At Random On IMac

Dec 1, 2014

I have an iMac late 2012. Since upgrading the OS to Yosemite,  I have had random drops in my wifi. I have already tried 'forgetting the network' and Deleting the system config stuff. I still get this random drop. My computer is unreliable. Dropping during an online exam is bs because it screws everything up. 

I have never experienced Wifi drops in my life and I am starting to get annoyed with this. 

My keyboard and mouse is using bluetooth... Does that have something to do with it? Should I just install and use Windows instead?

iMac, OS X Yosemite (10.10.1), Late 2012

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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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Hardware :: IMac Making Random Grinding Noise

Oct 19, 2009

My 20 mo. old 24" iMac has started making a random grinding noise. My guess is it's from the hard drive.

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IMac :: 27" IMac Freezing In Windows 7 After A While?

Nov 15, 2009

I just installed Windows 7 on my 27" i5 iMac, and it was working fine until just now. It froze completely (I could move the mouse around) for a minute, and then it unfroze.

I kept using it, and then it froze again, but this time I had to restart by holding down the power button. It just happened again, and I had to restart again.

The only thing I have running is Chrome, and this is a fresh install. What's going on?

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My 24 In IMac Keeps Freezing And Is Hot

Feb 28, 2012

I am getting very frustrated. I just upgraded my hard drive to a seagate 1tb hard drive and since I've done that I upgraded to lion and now my computer freezes all the time. I don't have the start up disk since I upgraded online. What can I do?

iMac, iOS 5.0.1

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OS X :: How To Run WMV Movies In Fullscreen

Jul 21, 2009

I downloaded the WMV Player plugin thing from Microsoft so that I could stream WMV movies from the web. Problem is, they all show up in TINY boxes where it's really hard to see anything and I can't find a way to put them fullscreen.

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IMac :: Safari 4.1.2 Keeps Freezing?

Nov 14, 2010

I am having issues with Safari freezing on my mac. I am running Safari 4.1.2 and running operating system 10.4.11. I am not sure if this is correct but i managed to sample the page by going on the Activity monitor.

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IMac :: Trying To Determine Causes Of Freezing?

Apr 23, 2009

Anyone have a freezy iMac with less than 8GB of ram installed? I made a brief attempt to search the forums for an answer to this, but was unsuccessful.

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IMac :: Started Freezing Randomly ?

Dec 8, 2010

I purchased a 24" iMac in fall of '07 and up until have had no problems at all. Let me describe the problems I'm having now and maybe someone can tell me what to do to remedy them.

A couple weeks ago it started freezing randomly. The mouse will switch to the beach ball and just spins endlessly. I can move it around but can't really do anything other than that. I have to do a hard reset to get it back to normal. Sometimes a couple programs are open, and sometimes none. It seems like it happens often when I quick switch from one user to another. It will switch, work for awhile, then freeze.

Now, no big deal, annoying, but whatever. But, the other day after doing a hard reset it revolted into a white screen with a flashing folder with a question mark. I did some research and found that I needed to repair the startup disc using the snow leopard disc. I did that and it allowed me to boot it back up normaly but didn't really solve the freeze up issue.

So, that just happened again, so I'll have to boot it up with the disc again and repair the startup disc when I get a chance. It's really beyond frustrating now.

I have repaired all permissions, updated all firmware, made sure the drive isn't full, pretty much everything short of backing up and wiping the drive and reinstalling the OS. Is that what I need ro do now? I mean, I know I need to, but is there something I can do to remedy until I can get around to doing that?

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PowerPC :: IMac G3 233 Ghz Freezing When Trying To Install OS

Jul 21, 2006

I have an old iMac Rev A (or B?) and it is constantly freezing. It freezes in OS 8, 9, and 10.3.. but most frustrating is that it also freezes while trying to install an OS. So right now it does not have an OS installed because of that. It will not boot up to my OS 9.1 disc.. but it will boot up to it's original 8.5 disc and a 10.3 disc.. However it always freezes near the beginning of the install process (often before it even writes to the HDD). I tried taking out the old RAM and leaving it with just the one (new) 256MB chip and that didn't work.

It was freezing before with only the old RAM so. I guess it's not the RAM. I have an identical iMac that doesn't choke on anything (never freezes) and it only has 96MB of RAM. I don't know what else I can do. I'm trying to use XPostFacto to put 10.4 on this thing (it's possible, I want to try it out at least) but it won't get through the first OS install and if it does, it won't get through the second (10.4). Even more frustrating is that I don't have any diagnostic software such as the Apple Hardware Test because the original iMac didn't come with any.

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Applications :: IMac Freezing With ITunes?

Oct 18, 2008

Is anyone else having the problem with iTunes 8 where your iMac freezes completely (only the mouse will move but you can't click anything)? I started having this problem after upgrading to 10.5.5 and iTunes 8.0.1.

Apple support discussion related to this: [URL]

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IMac :: Freezing To Blank Screen?

Jul 3, 2010

I need your opinions; since the 10.6.3 update my iMac has begun to freeze to a blank screen. I think this may be a sign of a dying logic board, however I question this as I don't have the freezing problem with 10.6.2. Picture of blank screen attached.

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IMac PPC :: G5 Not Freezing - No Boot Up And Goes To Sleep

Mar 22, 2012

I recently restarted my iMac G5 as I had not restarted it in a few days and now when I attempt to turn the computer back on it never makes it past the gray "OS X" screen, where I guess it loads the operating system? The system never freezes and I can move the cursor but it will not boot past and eventually goes to sleep.It is the 17" iMac G5 PPC.

iMac, Mac OS X (10.4.6)

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OS X V10.7 Lion :: IMac 2011 Keep Freezing

Apr 15, 2012

My Imac 2011 is freezing more and more often and I can't identify any pattern or software that causes it.

iMac, Mac OS X (10.7.3)

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OS X V10.6 Snow Leopard :: Why Does IMac Keep Freezing

May 8, 2012

For some reason my iMac has started to freeze everytime it goes into screen saver mode...  I have to turn the computer off to reset everthing.  This error message then popps up: 

Interval Since Last Panic Report:  8270 sec
Panics Since Last Report:          2
Anonymous UUID:                    300F47A0-F640-4693-97D3-CA4652D19A36  
Tue May  8 10:02:26 2012


iMac, Mac OS X (10.6.8)

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OS X Mavericks :: IMac Freezing Up Randomly

Jun 2, 2014

Why my iMac (27-inch, Mid 2011) has suddenly began randomly freezing up?All working great since I got it but recently I am having a consistent problem with it ceasing up. As a result I took action and restored it to factory defaults over the weekend thinking this would resolve the problem but unforuantely after 2 days without issue the problem has re-surfaced. 

EtreCheck version: 1.9.11 (43) - report generated 2 June 2014 20:53:38
BST Hardware Information:          iMac (27-inch, Mid 2011)          
iMac - model: iMac12,2          1 2.7 GHz Intel Core i5 CPU: 4 cores          12 GB RAM 
Video Information:          AMD Radeon HD 6770M - VRAM: 512 MB 

[Code] .....

iMac, OS X Mavericks (10.9.3)

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Applications :: ITunes Fullscreen Hack

Feb 16, 2009

I'm sure this has been asked before but I couldn't locate an answer I'm looking for...

I am interested to know if there is some way some how (3rd party plugin or hack) to fully expand itunes window to your entire resolution in OSX 10.5?

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