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27" i7 iMac random shutdown. Fun!

archipellago said:
I fully understand what you are trying to do but it makes no sense nor gives a solution.

outcome from your experiments will be either a/ or b/

a/ Chrome solves the problem, machine doesn't crash. User doesn't like Chrome so machine has to be returned.
b/ Chrome doesn't solve problem, machine has to be returned.

anyway I thought Macs just worked?

without need for much troubleshooting (if any) or the need to use (or not use) specific programs?

the real solution is to return for refund and if OSX is needed then wait for rev B, build a Hack or a different machine...... but seeing as Apples' desktop range is somewhat anaemic the choice is limited.
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By isolating the problem, one can hopefully figure out the conflict and address the software conflict. Again, my experience indicates this is not a hardware problem, so returning an iMac for this issue is not necessary, IMO.

This is not a competition. There is no Team Windows and Team Mac. You don't "win" when Mac users have issues that you don't happen have. All computers have problems. Every computer I've ever owned, from PCs to Mac. The fact I need to explain this to you is sad, but, apparently, necessary. If you don't find the Mac interface, software and experience to your preference then great - have a nice life. As far as I'm concerned, if you don't own a Mac and you are here to crow about other people's problems with nothing constructive to add, then you are a troll. You've just made my ignore list, so don't even bother replying.
 
robotkiller said:
By isolating the problem, one can hopefully figure out the conflict and address the software conflict. Again, my experience indicates this is not a hardware problem, so returning an iMac for this issue is not necessary, IMO.

This is not a competition. There is no Team Windows and Team Mac. You don't "win" when Mac users have issues that you don't happen have. All computers have problems. Every computer I've ever owned, from PCs to Mac. The fact I need to explain this to you is sad, but, apparently, necessary. If you don't find the Mac interface, software and experience to your preference then great - have a nice life. As far as I'm concerned, if you don't own a Mac and you are here to crow about other people's problems with nothing constructive to add, then you are a troll. You've just made my ignore list, so don't even bother replying.
Click to expand...



Lol @ ignore list, good, keep believing the hype...

software conflicts don't happen on a Mac though... Steve said.

unless you are admitting that Apple's spin marketing is a sham (I think you kinda have anyway) I have owned many, many Apple products and still 'maintain' some...

funny, in the Droid thread over on an iPhone thread. The end user couldn't be bothered to troubleshoot the droid and so returned it.

the apple fans said that 'expensive gadgets' should just work and that initial problems just mean bigger problems ahead.

ironic and funny...
 
archipellago

Tell me why flash is heating up the damn can if not by software "conflicts"? why is my safari crashing a lot streaming divx?

To know that mac is just different but not better than a pc is important. The standarts may be higher but if its built by men its going to fail - sooner or later ;)
 
grooveattack said:
its your PSU losing it for just a second. in your system prefs switch off "auto restart after power cut" if your computer goes off but has no restart its a PSU fault.

known 27" problem
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No, my auto restart after power outage is unchecked. It restarted anyway, so I suppose it's not the power supply. Good lead, though.
 
senseless said:
No, my auto restart after power outage is unchecked. It restarted anyway, so I suppose it's not the power supply. Good lead, though.
Click to expand...

Mine too is unchecked and after a week or so of no issues, mine just died in the middle of browsing (firefox) again. It immediately reset it self.
 
Same issue on 27" iMac i5

Yesterday, I observed a random shutdown/restart while running Safari viewing YouTube video. Luckily this time I lost nothing, but I'm worried if this should happen in the future. The machine is fully patched and running on fully functional UPS.
Jack
 
senseless said:
I posted this in another thread. In the last 3 days, I've had 2 resets, while clicking on the facebook newsfeed in Safari. I've done heavy load video encoding that bakes this machine, without any problems. Heat does not seem to be the issue for me.
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I had the same issue 3 days in a row all on Facebook in Safari. It's been fine for a week or so. I would click on it to open up then just like someone did a reset by holding the power button. I have had it since mid november with no issue until the 3 days in a row with it happening a couple times a day. ???
 
I've had this issue as well for an average of 2 times a day. My iMac is only a week old. Last night it happened five times in a row and I thought the high temperature of the iMac might have been the cause, the Power Supply 2 temperature was 80 degrees Celsius at the time.
The previous times it happened I was just browsing and not doing anything special.
I don't use Firefox so that can't be it. I use mainly Opera for surfing and sometimes Safari. Perhaps it has something with Javascript?
I'll try and disable that and see if the reboots disappear.
 
It's been a while since I last posted and since then I've had it happen twice and I thought I'd update for those curious.

The first of the two I was in facebook and I actually got a kernal panic. For those wondering, my software install is pretty normal. Adobe apps, adium, vuze, firefox. Nothing crazy goin on here. I assume it's probably related despite the fact it's the first time I've seen an error.

The one which happened just now I was using gmail and clicked to drop down the menu which shows more of your sidebar sections (ie: trash) and it died just as the menu was dropping down.
 
I have done some further testing and on my computer it is not due to Javascript and not due to high temperatures.

It happened to me again while browsing in Opera on a website I have never had problems with before. I had turned off Javascript both in Opera and in Safari.

My iMac temperature was normal and I had only switched it on for 15 minutes.
I think it is software related but I don't know what causes it yet.

The only programs I had running at the time of the reboot were:
Apple Mail
Opera
Path Finder
 
Any resolution for this issue??

I am having the exact same issue with my 27". I took it to an Apple store, and it would not fail. Got it home, 3 hours later, rebooted again. Called Apple, they said take it to another repair center. Again, did not fail. Got it home, reboots again.

We have 7 27" iMac's. This was a users system, replaced it with another one, the new one works fine. On the bad on, used a different power cord, different keyboard/mouse and different room, still reboots. Apple will not fix it unless I can get an error code to appear with diags. Stress test works fine. Just random reboots. Reformated and reloaded drive, still reboots. Apple said that if I can get a video, they may be able to replace parts but without a way to make it reboot, it is a long video. Any help in this matter would be greatly appreciated.

Thanks
 
rtheisssb said:
I am having the exact same issue with my 27". I took it to an Apple store, and it would not fail. Got it home, 3 hours later, rebooted again. Called Apple, they said take it to another repair center. Again, did not fail. Got it home, reboots again.

We have 7 27" iMac's. This was a users system, replaced it with another one, the new one works fine. On the bad on, used a different power cord, different keyboard/mouse and different room, still reboots. Apple will not fix it unless I can get an error code to appear with diags. Stress test works fine. Just random reboots. Reformated and reloaded drive, still reboots. Apple said that if I can get a video, they may be able to replace parts but without a way to make it reboot, it is a long video. Any help in this matter would be greatly appreciated.

Thanks
Click to expand...

Hard to get an error code if the PS wonks out and just cuts power. I had this issue with a G5 iMac and all the logs show is normal stuff going on until a certain time - then nothing for a while until it starts logging again when the system is restarted.

Other issues can cause it too. Bad RAM is another example. First try reseating the modules. If no improvement, swap it out with another machine, or pull one of the two modules out. If it happens again, swap the modules and see if the problem goes away.

My previous issues were caused by bad caps in the computer. This problem was noticed after a while of regular usage, followed by an occasional mysterious shut off. The computer never restarted itself though.
 
robotkiller said:
So my iMac has developed this awesome new feature. Two or three times a day it will decide to restart itself. There is no interruption in power and the speakers attached to the same outlet do not turn off, so it appears the problem is isolated to the computer itself. I am typically surfing when this happens, luckily no mission critical stuff has been lost.

Anyone else with this issue? I should be expecting iMac #4 in a couple of weeks, so I suppose I'll just have to deal with it in the meantime.
Click to expand...

Having similar problem although it hasn't happened for awhile. Screen would just go black and I'd have to hard reset. Got really bad for awhile, and now it hasn't happened for several days.
 
any modern computer system wouldn't restart without any warnings. current OS's are protected from this. in my practice of laptops repairing, sudden restarts without any warnings(BSOD,kernel panic, etc) ARE connected with hardware problem.
i think, this particular problem, not connected with PSU. can suggest, that this can be due to bad RAM, or overheating of MCP.
 
27" i5 2.8GHZ iMac random shutdown

Hi. my IMAC 27" I5 2.8GHZ 16 GIGA MEMORY. I HAVE THE SAME PROBLEM OF RANDOM SHUTDOWN I TESTED ALL OPTION, TODAY MY SON OPEN A PAGE WHO NEED WEBPLAYER TO RUN. HE IS LEGO FAN. IM TESTED 4 TIMES IN DIFFERENTS BROWSERS AND WHEN HE BEGIN TO PLAY THE COMPUTER TURN OFF INMEDDIATLY. PLEASE TRY AND LETS ME KNOW. I THINK IS SOMETHING WITH WEBPLAYER APPLICATION THE GPU DIODE AND HEATSINK GOES TO 150 FARENHEID.

http://starwars.lego.com/es-ar/Games/AceAssault/Default.aspx
 
iMac i7 2.8 late 2009
Same problem as everyone.
It's still going black screen 4 times a day with sound still running
It started 10.7.2
iMac super hot to touch top left corner.
Apple said it needs a new logic board and its out of warranty
It's not usable for anything other than checking mail at the moment.
Just adding another 27" user to the list of people with the same problem
2nd monitor didn't go down on mirror at first, but does now.
 
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