OS X V10.6 Snow Leopard :: IMac (2.8GHz Core 2 Duo) Occasionally Freezes With Black Or Coloured Screen?
Jun 21, 2012
Every few weeks my iMac will suddenly freeze, the screen going black or white or pink etc. The only way I can get the computer back is to hold down the power button to force a shutdown. Then after a restart everything is OK for a few more weeks. Usually it occurs when I am on the internet. I click on something and suddenly the computer is frozen. I am on OS X 10.6.8 and usually use Safari. Ironically when I opened this forum 5 minutes ago there was a similar sounding problem at the top of the list!
Info:
iMac, Mac OS X (10.6.8), FCE 4 + FCS 3 . . . Little Knowledge, Many Opinions.
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Mar 27, 2012
My macbook pro just has a black screen with a small coloured circle on the right of the screen. It is frozen and wont respond to turning it off or on. It is plugged into mains power.
Info:
MacBook Pro
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Apr 25, 2009
I have a black macbook that I got in Dec 2007. While I am using it, the screen will randomly going completely black and I have to move towards being closed until the screen works again. I think it is a short in the screen but I am not sure.
I was hoping someone else has had a similar problem and figured out how to fix it. I was also thinking about taking it into Apple or an Apple reseller to get it looked at but I am not sure how expensive it would be.
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Jan 18, 2010
I have put a brand new hard drive in the machine. I took off the plastic bezel to the power cord, to make sure it's plugging in all the way. I turned the computer on while watching the LED's on the logic board. All 3 stayed on, and the 4th never came on.
I have unplugged it, left it unplugged for a few minutes, plugged the cord back in while holding the power, then turned it on (forgot what that was supposed to accomplish). No change.
I have reset the PVRAM (or whatever) 3 times in a row by holding command-option-p-r until I heard 3 chimes after the initial boot. No change.
I can get into open firmware, but have no idea what I could even try in there (other than ejecting the DVD).
I hold down "C" while booting, it chimes, it goes to a blank grey background, then proceeds on to the white screen with the apple. It sits there for a few seconds, then starts spinning the circle for a while, then shuts down. I hear the optical drive spin up, but it does nothing.
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May 24, 2012
I came back from work to wake up my iMac. It made the noise but the screen stayed black. I tried restarting by holding the power button- I can hear it start and the chime but still have a black screen. I tried resetting the pram, and unplugging the cord but I still get a black screen. I can hear the chime though; I'm not sure if that means anything. I just had the hard drive replaced in February so I hope it's not that. just wanted to clarify that when I restart, I get the chime but the screen stays black- I don't get to the grey screen. So I'm assuming right now that my display may be shot?
Info:
iMac (20-inch Mid 2007), Mac OS X (10.5.8)
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May 28, 2012
pointer keeps turning into a coloured spinning wheel, waiting game ,there is plenty of RAM avaiable?
Info:
iMac (27-inch Mid 2011), iOS 5.1.1, 9months old
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Nov 1, 2009
I have had a string of bad luck with my mac, a couple of days ago the screen started flickering and my mac froze (could still move trackpad mouse, not click). It started up fine again.. It did this a couple times more (had to restart pressing power button). Then it froze evereytime I put the power cable in it. I solved this problem with an PRAM reset.
But now it still freezes up, the screen will start flickering and i can only move the mouse. When i try to reboot it gets stuck on the grey screen. only once every 20 times Ill get into the os.
I have tried a pram reset, holding the power button, safe mode, hardware test (no probs found), starting up without external devices.
It wont boot from the cd if it is stuck on the grey screen...
Could someone may be tell me what to do? thinking about bringing it to the store tomorrow .
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Mar 15, 2012
My Snow leopard machine hangs during startup at the screen with the Grey Apple logo. It appears there is a SW issue with my OS X boot partition. Here are facts I have learned:The computer boots fine if I hold option at startup and select my boot camp partitionThe compute boots fine if I attach an external HD with OS X 10.6Running a disk repair from the external HD, I see the following two issues that are repaired. Also, note the last line about boot partitionsAfter this disk repair, the disk will still not boot, it hangs at the Grey Apple logo.Booting in safe mode does not resolve the issue, the machine will still not boot to a desktopBooting in Verbose mode, drivers initialize with the last succesful line being the ethernet drives (I believe) and then the hangup occurs. It is unclear what state the boot process is at on the hangup.
This situation has happen twice in the past few weeks. The first time I did a reinstall of OS X to resolve the issue. Then, the issue appeared again approximately two weeks later. I'm hoping to avoid a second reinstall (And really, avoid this issue in the future). It seems perhaps something in the boot partition table or the OS partition, although disk utility says the partition is fine. I have downloaded Test Disk 6.13 to look at the partition table, but I don't know how to interpret the outputs of that program.
Info:
MacBook Pro (15-inch Core 2 Duo), Mac OS X (10.6.3), 2 GB RAM, Boot Camp, Ex HD avail
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Nov 19, 2009
Is anyone else experiencing this issue? I have a external monitor plugged in and I use my Macbook Pro (2009 Uni) as a secondary monitor. Randomly, the macbook screen just goes black. If I move my mouse on to the macbook screen, I can see the mouse cursor, but the rest of the screen is black! It's driving me mad!
The only fix is to un-plug the monitor adaptor or adjust display arrangements. It's really cramping my style.
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Jun 6, 2012
when I turn on iMac I got white screen with grey coloured flashing folder sign,a question mark on it, that's it.
Info:
iMac, 2006 model
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Mar 15, 2012
Ok I did some updateing and now get a black screen after booting. Here is what I did WAS running 10.5.8 Updated to 10.6 using a USB Downloaded and installed 10.6.3 Combination update (everything worked great) Installed iLife 2011 Downloaded latest update for iLife because is said I could not use it unless i updated.
Restarted fine logged in, showed display background. Then all black. Rebooted, black screen. Reboooted again, Black screen.
The issue only came up when I did the software update for iPhoto, iMovie,iWeb,iEverything else..
I have a 3.06 intel core 2 duo with 4 gig ram and 500 gb free space. Backed up on time machine on seperate HDD still plugged in to USB. Since I don't have USB selected as a boot drive can I still boot from the install 10.6 USB?
Info:
iMac 3.06GHz, 4GB, Mac OS X (10.5.8), 3.06GHz, 4GB
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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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Apr 26, 2012
I have an iMac 21inch, Late 2009. I found after it was runing really slow that my hard drive was failing. It told me there were SMART errors on the drive. The computer is out of warranty and I'm in the middle of no where so i have no Mac store to take it to. I bought a new drive, same model, and installed it into the computer. It turns on fine, but after the Apple logo and spinning coge wheel the screen flashes, shows the blue back ground like its going to load the desktop and then goes black.
I've tried connecting an external monitor to it and shows up like an extended display. I've tried connecting it to another Mac, a Mini, and the Mini can boot off the iMacs hard drive just fine. If it Target Disk mode the Mini and boot the iMac I get the same flash of blue desktop then it goes black.
This is where it gets weird though, I'm sure your thinking, ok the screen is going bad... BUT, I boot off an Ubuntu CD, or the AHT disk and it loads fine and has no turning black. Its only when booting into the Mac OS or the installation disk.
One last note is that when its at the black screen and I'm sure its loaded the desktop, if I hold the power button down for about 3-4 seconds, till I hear a click. I then press the button again right away and the screen flashes on showing me the desktop and everything, for about 2 seconds...
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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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Aug 3, 2010
I am looking to purchase my first Macbook Pro. I am having a difficult time deciding between a $1749 17" from Amazon that is the older 2.8Ghz Core 2 Duo and the $2298 17" (w/ student discount and tax... have to include tax) from Apple that is the newest model. The price difference is $549.
Some things I'm curious about:
1. Intel HD card? Does it really cause that much lag? How is it compared to the nVidia 9400m? I don't mean benchmarks, I mean real life performance.
2. Battery life? Is the battery life in the newest model much better than previous gen?
3. Heat? Is there a difference in heat production between them?
I don't care about gaming, so the 512 300m vs. 512 9600m is no concern.
Does the newest 17" justify the $549 price difference? Are there any other things that I should know between the two?
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Jan 8, 2010
This has been going on for a while. It happened first a month or so ago.
I turn on my 2008 iMac 24". The screen turns white like always, but no Apple icon appears. It starts to make a loud nice again and again. Bip, Bip. Pause. Bip, Bip, Pause. Bip, Bip. Pause.
I turn it off. Turn it on again. Same thing happens. Repeat.
I take out the cable powering the computer and go to school. I put it back in when i returned and turned the computer on. It worked fine.
Nothing happened again until a week after. I was sitting working on the computer, when it out of nowhere shows the "grey screen of death". I turn off the computer, take out the cable, leave it out for half and hour or so, then turn the computer on. It works fine. Works for a week. Same thing happens again.
Now it starting to appear more often tht though, and I'm afraid to turn it on until i get an external HD so i can Time Machine, in case it will appear more often for every time i turn it on.
The guarantee is not valid anymore (never purchased AppleCare) and i can't bring it to a store and show them what it does, because it doesn't always happen.
I read that it might a kernel panic somethingsomething, and that i need to wipe the HD. Though that was when the computer had the grey screen all the time. Not just occasionally like on mine.
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Nov 24, 2010
I have a problem with my iMac 2 GHz Intel Core 2 Duo (2 GB 667 MHz DDR 2 SDRAM), running OSX 10.6.5. OSX crashes and freezes all the time. Nothing works anymore. Sometimes it just freezes, and I can only move my cursor, but nothing reacts anymore. Sometimes the screen blacks (or sometimes blanks) out or shows the weird moving colours as shown on the photo I just took below: After restart, it often happens again and again. Then the iMac is fine for a couple of days, before it freezes again. Can anyone diagnose the problem from the info above?
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May 7, 2008
Middle of last month I bought a 20" IMac. Everything was fine up until about 1 week ago when the screen went black. I clicked on the mouse button several times only to have a password box pop-up. After filling in the response, all was fine.
Next, same scenario but the password box didn't appear any more. The only way to get the screen back was by a forced restart.
I turned off the screen saver, set the 2 controls in energy server to off, unchecked the box at the bottom left & put "auto login" to to on the Accounts window.
Problem continued.
Next move was to zap the pram, this was 2 days ago. The screen didn't go black but often asked for my pw. It's now back to its beginning phase which is a forced restart !!
I was told that it was due to Leopard 10.5.2 & am considering going back to 10.5.1
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Dec 17, 2007
How much faster would a 2.8ghz 24" iMac be than a Dual PPC 1.8ghz G5 with 512mb ram?
Barely faster? Twice as fast? 10 times faster? Light years faster?
I couldnt find any tests so if you have input or test links let me know!
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Aug 21, 2009
I'm running Leopard 10.5.8 on an iMac and continuously have problems booting the machine. The boot process occasionally hangs at the gray screen, but more often it hangs at the blue screen. Sometimes it makes it to the login screen where the cursor occasionally freezes. Whenever these problems occur I have to shut down by holding down the start button, then restart again. Usually the second boot is successful. This booting problem occurs frequently, even after running Disk Warrior and repairing permissions. I don't think this is normal behavior. Has anyone else had such problems? Is there anything I can do to correct this behavior, or is this something that needs to be fixed by Apple?
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Mar 5, 2009
The HD2600XT is, well, old..I want to get a new graphics card for my mac pro, but I don't want to pay the premium for mac only cards, I've read that you can flash a 8800GT to a mac card, but they're nowhere to be found anymore, which of the currently available cards can be flashed to be a mac compatible cards? I want to be able to use just that card only...
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Aug 23, 2010
Every once and a while, usually when my MacBook is running on it's battery, the screen will show a black screen for nearly only a millisecond or two. It's not too bothersome, and it usually blinks back to normal before I can notice it, but nevertheless I don't want it, and from what I can recall, this only started happening after I installed the Snow Leopard Graphics Update. Is anybody else getting these problems on their MBPs or MBs? MacBook config details in my sig.
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Feb 14, 2010
My itunes movie freezes everytime I play, even I have an imac with Intel core i7. Do you guys have same problem regarding itunes movie?
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Jan 21, 2011
G5 Power Mac, 4 gb RAM, OS 10.6. Machine freezes up if: I run a video (1st, 2nd one), use Safari for a few minutes, use Firefox for 1/2 hour, longer if I only have 1 tab open at a time. Occasionally, I get the black screen of death instead, with the #s running about the screen (white font), out of The Matrix. I've run Disk Utilities - RAM checks out okay, cleared out cache, switched to a new HD (old one had been there since I got the Mac, several years ago), these have alleviated but not eliminated the problem. A tech friend suggested thermal grease on the CPU, or replacing the CPU, but don't know if the latter's possible. Oh, and some part is missing that results in the fan running all of the time, like being on a runway.
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Jan 8, 2011
My iMac won't get past grey screen, I've tried holding down c. I've tried holding cmd+s. I've reset my PRAM etc, I've put back in RAM it came with, and when I turn it on I just get grey screen, apple logo and the spinning thing! Updated it to new snow leopard OSX 10.6.6 and it has a DVD in the drive and I can't even get that out! What can I do?
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Jun 9, 2012
This problem typically occured when I was doing something particularly strenuous, but I just recently had it happen while browsing the internet. The computer will suddenly freeze and start beeping loudly in groups of three with an LED on the front flashing in sync with the sound. I am running Snow leopar if that has any bearing on this problem. What exactly is causing this?
Info:
MacBook Pro (15-inch Early 2011), Mac OS X (10.6.8)
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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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Jul 9, 2009
So I had a recently purchased 17" BTO with the 7200RPM drive that worked great, but with one issue - the display would have horizontal scan lines and black out occasionally. So I called up Apple and eventually managed to get a cross-ship set up(they let me hold on to my current unit, charge my credit card and send me a second brand new 17" unit as a replacement,and then refund me for the second 17" after I send back the defective unit).
Anyway, the replacement unit looks great, but with one issue - there's a very small light dent on the bottom panel(maybe about the size of a dime). I was annoyed but don't think this is worth having to exchange, since I could probably just unscrew the panel and pop it back into place.
However, what really got to me was the fact that my replacement unit was slightly louder than my original - my original is so silent that I can't even tell it's on. However, with my replacement unit, I can hear the hard drive spinning, which is slightly annoying.
Anyway, I proceeded to restore from a time machine backup and test my replacement unit when I noticed that it would occasionally get the hard drive click + beep + freeze issue that many others who have the 7200 RPM drive seem to be facing. It's extremely annoying, and more importantly I miss the complete silence of my older unit.
My question is, while I'm still in possession of both units(which both have the exact same specs, same 7200 RPM drive, etc.), should I simply just open both up and take the silent(good) hard drive from my old unit and put it into my new one?
The click+beep freeze issue is really pissing me off, and my old unit didn't suffer from it - it's just this replacement one(doesn't make any sense).Anyway, would notice if I switched the hard drive? Would I get screwed somehow? Do they keep track of the hard drive serials or something?
I really don't want to go through the pain of sending this back, especially considering that a LOT of people are suffering from this issue, and I don't want to end up with another defective drive. I'm sick and tired of games and just want a computer that WORKS.
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Mar 2, 2010
I've got a 1.83 GHz 17" iMac and for all intents and purposes it fits the "Intel Processor" requirement for Snow Leopard but it isn't a true '64 bit' processor(?) like the later Intel chips... anyone installed the new OS on a similar machine and can report any major differences in speed (or not)?
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Apr 23, 2012
Can I get iCloud if I use a MacBookPro with Intel Core Duo (not Core 2)? I can't upgrade from 10.6.8 to 10.7 without a Core 2.
Info:
MacBook Pro, Mac OS X (10.6.8)
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