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19176 Views 97 Replies Latest reply: Nov 15, 2007 8:16 PM by msanterre
Currently Being ModeratedNov 8, 2007 9:56 AM (in response to Rycey)I'm using 10.4.10 Tiger on brand new iMac 24" and yesterday night for the first time i could move the mouse, but I couldnt launch program or open folder...
My iMac was hot after, may be 5 hours work.iMac 24"
Currently Being ModeratedNov 10, 2007 1:20 AM (in response to ickter)I had the same experience. I spoke with the manager of the Apple store and she said if I could repro the problem at the store, she'd exchange the computer. Lug machine to store, open iTunes, play any song, turn on the visualizer, watch iMac lockup.
She said she had sold lots of iMacs and had not seen any problems but agreed to swap the hardware. The "genius" came out to transfer the data to the new machine and said "bad video card huh? I just did one of these this morning". The replacement hardware has been stable for 2 weeks.
I'm convinced it was a hardware problem. The machine was a month old, well outside the 14 day window, but with some complaining I was able to get a replacment and I am now, once again, a happy Apple customer.24" imac, Mac OS X (10.4.10)
Currently Being ModeratedNov 10, 2007 1:35 AM (in response to Rycey)Hi man, i noticed the same problem here! I've a 24" iMac core2duo 2,8GHZ xtreme, and after the upgrading to Leo i had the same problem..freezing etc!
I was worried because lately i was reading in www forums about this freezing problem with some imac models.
They say hw problem, but if it was an hw problems it should happen every time and not randomly...
Sorry for my bad EnglishiMAC 24 2.8Ghz, Mac OS X (10.5)
Currently Being ModeratedNov 10, 2007 4:44 AM (in response to TheNightFlyer)Guys Tiger did the same thing for me until the latest updates were applied now Tiger works great and doesnt lockup,Im sure it's software because of that and they will release a fix that will fix Leopard soon we will just have to wait and see.
Currently Being ModeratedNov 10, 2007 5:16 AM (in response to TheNightFlyer)In my opinion if you were having a freeze problem with Tiger and did all the software updates then you have a hardware issue and need to have the video card or the motherboard or the entire unit replaced.
An upgrade to Leopard will not fix a machine that was freezing previously and in fact it could make it worse.
I tried all the upgrades and did everything possible to try and make mine work and it would not so I called Apple and they replaced my Mac with a new one. It came with Tiger, I have applied all the updates and have not had one single freeze. I have the upgrade disk for Leopard but have not applied it yet. I am not sure when I will.
If you have tried everything you can do, reinstalling the system, resetting the PRAM and NVRAM, run the hardware test in regular and extended mode, tried to use it after uninstalling any third party memory you may have in it, reset the SMC, checked the disk with Disk Utility, repaired the disk permissions and none of those things have helped, call Apple and tell them. Don't lie about it. If you have not tried all of those things then you have not ruled out other issues, but if you have, call them and tell them and they should arrange to either fix or replace your Mac.
This is what appears to be working for many posters and may be the best solution for those that are suffering from this problem. I put up with it for 60 days but now I don't have to any more as I did all I could from a user perspective to solve it and could not so Apple made good and in my case they replaced my Mac. They were going to fix it first then called me back and said Engineering wanted my old Mac for testing and offered to replace mine if I would give them my old one. It would have been easier to get mine fixed but what the heck, I got a new Mac out of the deal!24"imac 2.4Gz, 17"iMac core duo, 20" G5 iMac, 20" Intel iMac, Mac OS X (10.4.8)
Currently Being ModeratedNov 10, 2007 6:27 AM (in response to TheNightFlyer)Hi,
I had the same problems but I've just resolved.
The symptoms on my iMac:
1. iMac froze during playing internet radio on iTunes.
2. iMac froze on running iTunes and browsing with Safari at the same time.
When iMac froze, only mouse pointer was available, and sometimes iMac display was black out.
What I did:
1. Format HDD volume and reinstall Leopard, not upgrade to Leopard.
2. Apply all the Software Update items except iMac Software Update 1.3.
#I did 2 things at once. So I didn't know whether Leopard upgrading (= not clean and install) was a root of cause or not. I suspect iMac Software Update 1.3 for my cases. But well, sorry, I'm not sure.
Hope this helps.iMac 24", 2.8Ghz, 500GB HD, 2GB RAM, Mac OS X (10.5)
Currently Being ModeratedNov 10, 2007 10:20 AM (in response to shubdog)Shubdog:
What kind of video card did Apple Store put in your iMac? Is it the same model as that which came with it when you bought the iMac? What does System Profiler say about it?PowerMac G4 (Digital Audio) 733 MHz, Mac OS X (10.4.10)
Currently Being ModeratedNov 11, 2007 11:47 PM (in response to astronauta)Hi all, i just wanted to let you know that i have been experiencing all the same problems that you have had, and i have been running the "boot camp" and the same problem occurs there too.....artifacts on the screen, shutdowns, freezing, yadayada. Well, because the problems exist in both the mac os x, and windows (on a mac), i'm willing to bet that it is a graphics card issue. Now i'm not a genius, and i'm not sure this will even solve anything, but i'll just give you some evidence.
Whenever doing graphically intensive things, the system freezes..
This include video games, front row, safari, sometimes even just the desktop.
Next, The mac seems very, VERY hot especially in the top left corner (I think it might be where the graphics card is)
This points to the fact that i think that the graphics card is overheating, as i can not hear the fan going while this is occuring, while the computer (especially the top left corner) is getting extremely hot, way to hot for a computer. THink about it, while the fans remain silent, there is just a tiny slit in the back of the computer for air to be pushed out, it doesn't seem to be very good design, unless the fans work like they are supposed to.
ALso, When playing a game (in windows) every time i freeze, the computer itself doesn't seem to freeze, because there is still the Game music playing in the background, only the screen goes black (the black screen only seems to happen in windows, not in mac, although the freezes are similar).
What i'm thinking---is that it isn't a ram issue, but a graphics card issue, becuase the problems occur in displaying the picture (as evidence stated above). The final thought is that the computer is overheating, and the graphics card just can't handle the heat, and therefore the computer crashes. I'm not sure if apple is going to be able to fix this with a software update or what..but we will see. Just putting in my three cents...
I will be happy when apple acknowledges this issue and comes out with a fix!!!
A fellow freezerer
PS The whole overheating theory may not be true, for i have experienced crashes while the computer is still cold-warm...usually a minute or so after startup. It just seems to happen more often when the computer is hot
PSS I really hope this issue can be Answered!!!!!Imac intel Aluminum, Mac OS X (10.4.8), 2.4 ghz intel core 2 duo, 2 Gb 667 MHZ DDR2 SDRAM
Currently Being ModeratedNov 12, 2007 6:26 AM (in response to Al Van Malsen)In total agreement. I waited little over 60 days and dealt with constant freezing in Tiger and then in Leopard. I made appointment with local Apple store (Genius Bar), and brought the iMac down there. Tech looked at it - turned it on and in a few minutes in hung (in Leopard using the erase/install method). I also left my Leopard DVD with them so they can be convinced it was not the DVD. After 8 days I got call that they tried all sorts of things and yet the iMac would still hang in Leopard. They agreed it was hardware issue and were replacing logic and graphics boards. However, I stated it would be a lot easier to just give me new one - they did and the new iMac has run perfectly for four days now.
Recommend that folks with freezing iMacs in leopard (using a erase/install method) that you bring your iMac to local apple store for repair - tell them to keep it until Leopard is shown to be working without freezing - they will replace your hardware or give you new iMac - either approach is better than waiting for Apple's maybe fix.24" Aluminum iMac (2GHz), Mac OS X (10.5)
Currently Being ModeratedNov 12, 2007 12:55 PM (in response to Rycey)I have the same problem with my brand new Imac 24: it freezes randomly, mainly when using Aperture but this happens also with Itunes and some videos application. This occured just after a clean install of Leopard. I spent 45 mn with tech support, the guy asked me to run all tests, including resetting memory (cmd + alt + P + R keys at the same time), disconnecting all external hardware. Then he asked me to try to reproduce the freeze, I opened Aperture, flipped through a couple of pictures and it freezed again, in less than 30 seconds. Apple accepted to exchange it, they are about to send me a new Imac without much discussion. The machine worked well with Tiger, so the issue should be with Leopard. If you experience the same bad experience with a new Mac, I suggest to return it. When Apple will have a lot of return, they may look to this issue with care. However, they were very nice when I asked my machine to be replaced, excellent customer service, but I cannot say this for the technical support... apparently they still don't know how this come from.Imac 24, Mac OS X (10.5)
Currently Being ModeratedNov 12, 2007 1:17 PM (in response to amathys)Hey everyone,
I had the same exact problems - freezing of my 24" iMac with software update 1.1 and then Leopard - the freezes were so frequent that the computer was unusable. It would freeze up in 30 secs after bootup. The computer was also unstable in Vista (with aero enabled) and XP (only in graphics intensive games).
I waited for a software update - they never worked. So, I finally trekked to the mall and brought the iMac to the apple store. There, I convinced them to replace the graphics card. I just got it back, have put it through it's paces - IT'S CURED!!!
SO, IF YOU ARE HAVING PROBLEMS, CALL OR BRING IT IN AND GET IT FIXED!!! There is no software solution if you are having problems in both OS X and Windows. All they replaced is the graphics card and it is running beautifully, like it should have to begin with.
Good luck all - keep calling Apple and bringing your computers in!!!iMAC, Mac OS X (10.5), Aluminum iMac 2.8GHz 4GB RAM 750GB HD
Currently Being ModeratedNov 12, 2007 1:37 PM (in response to Rycey)dont they just replace the logic board? or is the graphics card separate? im getting my logic board replaced.
i hope they dont use the same graphics card. the genius said the graphics card "100% wasn't the issue".iMac G5, Mac OS X (10.5)
Currently Being ModeratedNov 12, 2007 1:44 PM (in response to sameeroquai)Genius doesn't know what he/she is talking about. It's the memory on the graphics card, changing the logic board only won't fix ur issue (unless it is a different issue than that described on this board). I got the same bs from genius, they ordered Logic board, but i made them order a graphics replacement too, also made them list on the work order that graphics portion must be replaced FIRST, then logic board.Imac 20 inch, Mac OS X (10.5), 2600Pro, 20 inch 2.4 CPU