For no apparent reason, my iMac (27" mid 2010) has a very loud fan all of a sudden. PCU usage is not high.I already followed the instructions to reset my SMC... Nothing changed.I used compressed air to clean eveythingn I could... No change.
Info:iMac
I only got the computer yesterday from Apple, but it was refurbished. It's an iMac 21" 2.7 1TB.
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iMac, Mac OS X (10.7.2)
I have been battling with fan speed on my iMac recently.
I installed iStat which shows normal temps, but the fan revs up to 4000rpm - for seemingly no reason at all. Sometimes its quiet for long periods. It sometimes helps for a while if I put the machine into Sleep mode, but then I hear the fan start to rev up again when I resume activity.
I have spent hours with tech support, who then upgraded me to a higher level of tech support. But still the problem continues.
My Macbook Pro (from mid-2010) has recently started running EXTREMELY slowly, and the fan continuously runs loudly. From other posts, I have checked my activity monitor to see if any process is taking up a lot of the CPU % and have found that nothing seems high, except the kernel_task which, from what I understand, is supposed to be high. I have also attempted to reset the SMC which didn't fix the problem either. I have taken my computer to the genius bar 3 times now, and they keep telling me nothing is wrong (because it works perfectly there), but when I get it home the fan comes back on, and everything runs slowly.
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MacBook Pro (13-inch Mid 2010), OS X Mavericks (10.9.2)
I have seen this question answered before but can't find it in the archives. Almost immediately after starting to use the laptop the fan starts running and doesn't quit until you put it back to sleep or turn it off. Any ideas on why this is happening and is it harmful to the computer in the long run?
View 7 Replies View RelatedI have a late-2006 MacBook (2.0 GHz Core 2 Duo Merom) that has been serviced several times. It�s had the fan replaced twice: once in the summer of 2007 because it completely failed, and once in the summer of 2009 because it had been making clicking noises. The logic board was replaced last November because of some minor issues with the headphone jack, along with the LCD which had some gray dots starting to appear.
I�m not sure how long it�s been doing this, but the fan seems to be running way faster than would be normal. The fan never seems to run below 5000 RPM, and once the CPU warms up, it seems to run continuously at 6200 RPM (the maximum speed). smcFanControl (set to Default fan speed, the minimum) usually reads the temperature as being between 145 and 155 degrees Fahrenheit. I took the keyboard off yesterday to clean dust out of the fan, but it didn�t seem to do much. I�m pretty sure this isn�t a software issue, because the fan also seems to run a lot when the MacBook is booted into Windows 7, although I�m going to try booting it from the OS disc and an external hard drive just to be sure. I�ve tried resetting the SMC, and I�m pretty sure I tried resetting the PRAM a while ago. The only remaining thing I can think of is that when the repair tech replaced the logic board, he didn�t apply the thermal paste properly (the optical drive was replaced even though it was working when I sent my MacBook in, two hinge screws were overtightened, and the bezel was not installed properly).
Are there any other things that could be causing my MacBook to not cool properly? If booting from another copy of the OS doesn�t change the fan speeds, I�m thinking about taking the heatsink off this weekend and applying some Arctic Silver.
this happens when I first turn in on so its not that it over heated or has become hot. ive tried turning it on and off and restarting it and still nothing. ive tried using the site islayer. and I don't want to have to take it apart im thinking about taking to apple if its an unfixable issue at home.
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iMac, Mac OS X (10.6.8)
My mac just blew out a lot of dust and now the fan is very loud.
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iMac, Mac OS X (10.6.8)
i tried turning on my iMac an hour ago and it whirred up with a black screen while beeping continuously, each beep an equal distance apart. I tried counting the beeps a few times and they don't seem to stop (I counted up to about 30 before i decided to stop, they kept going!)
I've read a few forum posts, and other things related on the internet, but no-one has a problem with continuous beeping. I don't know how to open up my mac book and replace RAM, or anything of the sorts.
Since 2 weeks, after years of 0 problems, my iMac is continuously freezing or crashing when I use Apple software (Mail, Software Update, Garageband).
I've installed Kaspersky and even reinstalled Mac OS Lion, same problem. It goes away temportarily when I restart cleaning the PRAM. or turning off the extensions.
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iMac, Mac OS X (10.6.4), Intel Core 2 Duo
My 27inch iMac has suddenly started writing to hard disc at 1.6MB/sec continuously according to Activity Monitor. Very noisy, and slowing computer down.. Cannot establish what it is writing or why. No virus (never been used for internet).
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iMac
Noise of fan continuously running may also be the hard disk.
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iMac (27-inch Mid 2010), Mac OS X (10.6)
When I play any online video, it stalls a minute then continues, stalls, then continues. I don't remember this being the case when I first got my IMAC.
View 2 Replies View RelatedMY fan is running at full power continously
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iMac, Mac OS X (10.7.4)
I have an Intel-based iMac desktop that suddenly began to have cd drive issues. Whenever I put any disc into the drive it almost goes all the way in and then it automatically ejects the cd. The cd never goes fully into the drive. My iMac is still under warranty but I really dont want to send it in but I will if I must.
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iMac (21.5-inch Mid 2011), Mac OS X (10.7.4)
My iMac runs very very slow always putting up the rainbow wheel every time I click on something. That includes internet and just opening programs.
Info:iMac, Mac OS X (10.5.8)
Firefox hangs pages, won't load pages ect. It does not do this all the time, but a fair amount of it. I do not have the same problem with Safari, so I am suspicious as to whether other browsers are less eefficient on my Mac by design so that I use Safari exclusively
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iMac (21.5-inch Mid 2010), Mac OS X (10.6.8)
My IMac runs slowly all of a suddent with the catherine wheel appearing often as i move between porgrams and browse web sites
I have downloaded a sophos anti virus and have run all the security updates from the Apple site
Info:iMac, Mac OS X (10.6.8)
I just recovered from a hard drive failure via Super Duper. Went to do a post crash Time Machine and it is taking HOURS. What gives.
View 2 Replies View RelatedOur iMac is 18 months old and three times in the last few months the fan has switched on at full speed as soon as I press the power button. If I disconnect the computer from the power source and turn it upside down before reconnecting and starting it up, the fan will then work normally. Has anyone else had this problem? I guess the answer is to take it to a service centre, but I thought I would see if there is a simple resolution to the problem first.Â
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iMac, Mac OS X (10.7.4)
It all of a sudden started opperating very very slowly, even when doing simple things like clicking the apple icon in the corner, it will freeze or take foreve to open. Its constantly showing the spinning rainbow cursor and it literally takes 20 minutes to turn on. It would take hours to send an email.
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iMac
I am currently using a 2TB external hard drive to access all my photos and music when working with Lightroom 4 and iTunes. My 2TB storage space is almost getting full and has started me wondering what I'd need to do to continue working this way. I'm assuming even if I get another 2 or 3TB external hard drive, I'd still have to select only 1 external hard drive for Lightroom to access... Same goes for iTunes. What if I have music in both external hard drives?
View 7 Replies View RelatedMy iMac runs perfectly fine; more or less as it did when it was new. In OS X, when I shut down the computer, the fan runs at full speed indefinitely, unless I unplug it or boot back up. When running, the fan is perfectly normal (increases speed a bit when doing something taxing). I've never heard it at full speed before until this started happening. After following the SMC reset procedure with no luck (I'd like to add that the SMC reset only says it relates to fan problems when the computer is ON), I searched a bit and noticed there are one or two cases where a problem like mine was believed to be a motherboard issue, and therefore a costly fix.Â
However, here's the fun part. When booted into Windows 8.1, shutting down the iMac does not cause this issue to occur. It stays silent, as it should, even if I disconnect then reconnect the power. This leads me to believe it's unlikely to be a motherboard issue. However I've wiped, restored, and reinstalled fresh copies of Mountain Lion, Mavericks, and Windows 8.1, and the result is still the same: if I don't want to have to unplug it from the wall, then I have to use Windows to shut it down.Â
So then, my questions are these:
-What is the difference between shutting down from OS X and shutting down from Windows?
-Is an operating system allowed/able to touch BIOS settings?
-Is it possible to still be a hardware problem, given this difference?Â
My default OS is OS X, and it makes no difference if I change that to Windows. I also did a PRAM reset, even though that has nothing to do with fans...
Info:
iMac, OS X Mavericks (10.9.4)
my 15inch umbp that i got in april is now creaking quite loudly when i lift up the lid to turn it on and again when i close it, is this normal or is it going to get worse
View 7 Replies View RelatedRecently I have woken up during the night because my Macbook has randomly 'awoken' causing my two external hard drives to spin up and its internal system fan to start blowing loudly. This is weird for a start. What's weirder is that it doesn't fully wake up when it does this, or at least my external display doesn't come on, it just sits there in this half awake/half asleep state with the fan blowing a gale. If it's doing something weird like waking on LAN or Bluetooth or one of my iDevices trying to sync etc, is there a way to disable this or at the very least kill the noisy fan?
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MacBook Pro 13", Mac OS X (10.6.2)
I have an iMac G5 that is starting up, then working okay for 1-2 minutes. After that, the processor usage goes way up, and the fans start spinning loudly. It's a first generation 1.8 GHz with a 17" display. Mac OS X Leopard. Recently, it spun up and then shut down and wouldn't start again. The room it's in is < 75 degrees F. No malodor, or other symptoms save for hot to the touch. Has been left shut off and unplugged for a few hours, and still has this problem.
View 8 Replies View RelatedThis 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?
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MacBook Pro (15-inch Early 2011), Mac OS X (10.6.8)
my 15inch umbp that i got in april is now creaking quite loudly when i lift up the lid to turn it on and again when i close it, is this normal or is it going to get worse
I'm having a problem with Software Update showing the 10.5.3 update 'ready to install' after I've already installed it. I even went to the extra measure of replacing it with the full combo installer to make sure.
View 4 Replies View RelatedThere is something called mdimportserver that has started to crash, then being restarted, then crash, and so on continously. The crash log keeps growing steadily.
It all started after I upgraded my Finale NotePad music notation application to version 2010, so it may or may not be related to the problem. I threw it away, but mdimportserver keeps crashing. My Mac is an old PowerPC iMac G5.
