Macbook pro fan always running - cpus are pegged by kernel

I reloaded the os with no change. When restarted the fans start and the cpus are pegged within 1 minute.

Did you use the Command-R keys method or did you try Command-option-R keys to boot to true Internet Recovery? You should be able to wipe your hard drive (erasing it and formatting as "Mac OS Extended (Journaled)" with a single GUID partition. DON'T try this method if you don't have a backup as it will erase everything on the hard drive.
You may need to get an external drive and use Time Machine to make a backup and then COMPLETELY wipe the drive and make a COMPLETE new OS installation.
Call back...
Clinton

Similar Messages

What is causing my Macbook Pro fan to run constantly?

Hello. Recently my Macbook Pro fan has begun to run constantly at high power. I've checked the activity monitor and even when there is little RAM or CPU this occurs. I am wondering if the issue is the hard drive because the I am seeing spikes in disk activity at random times even when I am not using the hard drive. The computer is actually heating up when the fans are on at full power, so this also leads me to believe it could be the hard drive. I have already tried resetting the system management controller. Any other ideas? What should I do about this?
Thanks a lot.

Try raising the the the machine with wood, or , plastic botttle caps t get it up an inch or so, that way there is more air flow under the MBP to help with the air flow to help keep the cooling more een. Hope this helps.

My Macbook Pro fans always on

Hi to everyone,
I just noticed some days ago that on my brand new MacBook Pro (5-6 months older) 2.3 ghz I7 with 10.8.5, the right and left fans are always on.
From what I can remember, in this months I never noticed something like this, I mean fans always on, especially when the mac wasn't run any application.
I don't use to install craps on the macs, I always used this philosophy, even if the Mac is less "fancy" and I always got great result, my Powerbook G4 1.67 ghz with 10.5.8 still working great!
I usually use it mainly for music production and daily net-mail works. I have for the 80% of the time the Mac connected with a NEC EX231W external display by thunderbolt, a Motu 4Pre, by the fw800, a WD usb3 hd on a usb port and a 4usb hub on the other port.
From what I can remember in the past months I neved had the fan always on, for most of the time they were really off and from the first moment I always use the set I metioned above.
So now I'm starting to be worry about, because I noticed that even when the mac is working with the battery, with no devices connected, running really few applications, not particualry heavy, the fans are always at 1998/2000 rpm.
Thanks to everyone can help me to fix this problem.

As we've repeatedly mentioned, the fans are designed to run all the time, in a 2000-6000 RPM range. If at any time speed falls to zero, "Houston, we have a problem" time has arrived. The heat load from the CPU (and GPU, if so equipped) would quickly reach the danger zone.
Why would you get a zero RPM reading? As usual, it is either a software or a hardware problem. Software: whatever it is you're using for the readout ain't getting it right OR there's a major "kunfuzzion" in there. Hardware: speed sensor(s) damaged OR fan(s) blocked and really not running. Either way, the issue needs to be addressed pronto, cause if "no fan(s)" is really and truly NO FAN(S), Mac's gonna be kaput in no time.
Note that I say fan(s) cause we've yet to confirm if yours is a 15" unit. Those and the ancient 17" come with two fans. The 13" units have a single one.

Macbook Pro fans constantly running, Safari hangs up and/or crashes often.

My 2012 Macbook Pro (10.9.2, 2 GHz Intel Core i7, 4 GB Memory) has been acting up a lot lately. The fans are constantly running even if major apps (mail, safari, itunes, messages, etc.) are closed. Safari, in particular, has been hanging up and/or crashing recently for no real apparent reason. My battery has been draining out faster than usual. I've always tried to be very cognizant to the health of my computers and phones and try to limit the amount of apps and files I download, sites I visit, etc. I've already done Verify Disk and Verify Disk Permissions in Disk Utility, reset Safari numerous times, disabled all extensions, removed unnecessary apps, and altered settings in Energy Saver, all to no avail. I'm a grad student so I only use my laptop for Safari and Microsoft Word and put it to sleep when not in use as often as possible. Also, my battery was at 56% about 23 minutes ago and is now at 38%.
Below is a list of the processes using the most memory in Activity Monitor:
kernel_task                                   429.4 MB
Safari Web Content                      127.7 MB
com.apple.IconServicesAgent     122.8 MB
WindowServer                              65.6 MB
mds_stores                                   52.1 MB
Safari                                            43.6 MB
CVMComplier                               34.7MB
Memory Used     3.80 GB
Virtual Memory     4.00GB
App Memory          1.34 GB
File Cache          1.45 GB
Wired Memory     998.4 MB
Compressed          332K
Any insight would be greatly appreciated!
Thanks.

plane928,
have you tried resetting your MacBook Pro’s System Management Controller?

Macbook pro fan always on

Hi,
So as of a couple of days ago, whenever I use my macbook, doing some very basic tasks (like using the internet/word processing/whatever) the fan always revs up and works quite hard.
I am aware of that sometimes programs are stuck on high CPU (i.e. flash) and hence take up quite a bit of memory, but these last couple of days, nothing is out of the ordinary when I check the activity monitor and normal amount of memory is used.
So now my computer is constantly very hot and fan is always working hard? Any ideas how I can fix this?
I've attached two images of what the activity monitor usually looks like.
Could the fan have stuff stuck in it? If so, how can I fix it as I have a unibody macbook pro.
Cheers!

Like stedman says, in activity monitor click where it says %CPU so it arranges the processes from highest to lowest to check if you have any runaway processes, and if you have any that are running at a high % (80%+) select them and click Quit process.
if there are no runaway processes try reseting the SMC

Macbook Pro fan keeps running (2011)

Hi there, I recently charged my 2011 13" Macbook Pro to 100%. Upon using it in class for about 2hours the Fan was constalny running and CPU raging on high. Moreover, the battery goes down to 20% in this time period. For reference, I only had Google Chrome, Mail and Word open in this class period. Whats going on? As I type this to you, the fan is this going strong and my battery in 20%
Any ideas? Should I contact the Apple store as I do have an Apple Care Warranty on the machine
I also have a Curcial 512GB SSD in the machine but this is the first time this is happening in the 3 weeks use in the SSD installed and upadted to Apples latest update a few days ago
Thanks

Just to narrow things down a bit.
I had the same problem and discovered the following. When using Firefox, my battery ran out of time faster, my mac was hot and fan ran periodically. When using FF with Silverlight, battery time was even worse, fan almost always on and computer was hot.
On 3rd test, I moved all my open pages from FF to Safari and have been testing the battery time with FF closed and Safari open. So far, my fan has not come on once. Going to watch a video online to see if it's better as well. My diagnostics show Silverlight, by far, is a power hog, FF was the next biggest problem but not bad.
Basic details from rough testing.
6/21/12 with Silverlight running in FF
1.34 min at 12.39 pm full power on screen, full charge
.32 min at 1.39 pm
just over 1 hr.
6/22/12 - activity monitor open, FF, no silverlight.
3.47 min at 9.38 am 3/4 power on screen, full charge, silverlight off and on.
.19 min at 12.28 pm
Almost 3 hrs.
6/21/12 after recharge. Full charge, 3/4 power on screen lighting. All work in Safari, FF closed.
4.39 min at 5.55 pm using safari and not firefox.
3.59 at 7.02 pm
waiting to see.
Hope this helps anyone.
Using a MBP 15", late 2011, with Snow Leopard, v. 10.6.8, Hybrid hard drive

Macbook pro fan always on... and I've read all the threads.

Have read countless threads, but still no definitive answer that i've been able to understand: MBP fan runs constantly with CPU load very low. i NEVER have a high CPU load when i look at activity monitor--(the highest CPU load when i look there is usually activity monitor itself!)
i am running 10.8.4 on a 15" MBP 2.53 core 2 duo early 2009. when i'm running relatively simple processes--listening to music, pages, keynote, google searches online -- fans run almost all the time and surface of laptop is hot. by comparison, i have a business MBP that is configured similar to this one--it's also a 15" 2.53 but an i5 -- it has less RAM than mine, but the fan almost never comes on, even when i run a bumch of stuff to TRY and make it come on.
any help out there?

1. Reset the SMC. Don't know which type battery your macbook has so both procedures are below.
2. Download and install iStatPro http://www.apple.com/downloads/dashboard/status/istatpro.html so thatyou can actually monitor your temps and fan speeds.
MacBook and MacBook Pro
Laptops with a battery you can remove
Shut down the computer.
Disconnect the MagSafe power adapter from the computer, if it's connected.
Remove the battery.
Press and hold the power button for 5 seconds.
Release the power button.
Reconnect the battery and MagSafe power adapter.
Press the power button to turn on the computer.
Newer Mac portables with a battery you don't remove
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

My MacBook Pro is always running very slow and freezes up at least once a day, please help!!!!

Over the last 6 months my Macbook pro is running slow and freezes up a lot, I've done a check with EtreCheck, report below.
If anyone can offer some advice I would be very grateful, cheers....
Problem description:
Consistently slow running of all programs and freezes up for 2/3 mins
EtreCheck version: 2.0.11 (98)
Report generated 16 November 2014 00:35:40 GMT
Hardware Information: ℹ️
MacBook Pro (13-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000 -
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 9 days 23:20:46
Disk Information: ℹ️
APPLE HDD HTS547550A9E384 disk0 : (500.11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / [Startup]: 498.88 GB (318.43 GB free)
Encrypted AES-XTS Unlocked
Core Storage: disk0s2 499.25 GB Online
MATSHITADVD-R   UJ-8A8
USB Information: ℹ️
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Inc. FaceTime HD Camera (Built-in)
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Problem System Launch Agents: ℹ️
[failed] com.apple.CallHistoryPluginHelper.plist
[failed] com.apple.CallHistorySyncHelper.plist
[failed] com.apple.cmfsyncagent.plist
[failed] com.apple.EscrowSecurityAlert.plist
[failed] com.apple.gamed.plist
[failed] com.apple.sbd.plist
[failed] com.apple.spindump_agent.plist
[failed] com.apple.telephonyutilities.callservicesd.plist
Problem System Launch Daemons: ℹ️
[failed] com.apple.AirPlayXPCHelper.plist
[failed] com.apple.AssetCacheLocatorService.plist
[failed] com.apple.awdd.plist
[failed] com.apple.corestorage.corestoragehelperd.plist
[failed] com.apple.ctkd.plist
[failed] com.apple.icloud.findmydeviced.plist
[failed] com.apple.ifdreader.plist
[failed] com.apple.nehelper.plist
[failed] com.apple.periodic-daily.plist
[failed] com.apple.periodic-weekly.plist
[failed] com.apple.softwareupdate_download_service.plist
[failed] com.apple.wdhelper.plist
[failed] com.apple.xpc.smd.plist
Launch Agents: ℹ️
[running] com.epson.eventmanager.agent.plist Support
[loaded] com.epson.ews.launcher.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
User Launch Agents: ℹ️
[loaded] com.google.keystone.agent.plist Support
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins: ℹ️
FlashPlayer-10.6: Version: 15.0.0.223 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
Flash Player: Version: 15.0.0.223 - SDK 10.6 Support
Default Browser: Version: 600 - SDK 10.10
SharePointBrowserPlugin: Version: 14.0.0 Support
Silverlight: Version: 4.1.10329.0 Support
iPhotoPhotocast: Version: 7.0 - SDK 10.8
User Internet Plug-ins: ℹ️
Google Earth Web Plug-in: Version: 7.1 Support
3rd Party Preference Panes: ℹ️
Flash Player Support
Time Machine: ℹ️
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 498.88 GB Disk used: 180.44 GB
Destinations:
Seagate Backup Plus Drive [Local]
Total size: 999.53 GB
Total number of backups: 7
Oldest backup: 2013-12-06 12:44:36 +0000
Last backup: 2014-11-03 17:58:25 +0000
Size of backup disk: Adequate
Backup size 999.53 GB > (Disk used 180.44 GB X 3)
Top Processes by CPU: ℹ️
      5% WindowServer
      1% EEventManager
      0% fontd
      0% configd
      0% AppleSpell
Top Processes by Memory: ℹ️
137 MB com.apple.WebKit.WebContent
116 MB Safari
47 MB sandboxd
47 MB WindowServer
43 MB Finder
Virtual Memory Information: ℹ️
913 MB Free RAM
1.43 GB Active RAM
635 MB Inactive RAM
933 MB Wired RAM
36.97 GB Page-ins
2.13 GB Page-outs

You may wish to read about maintenance and upkeep of the OS X, plus other
information, across several topics in this site with topics divided into Guides:
•Tech Guides - TheSafeMac:
http://www.thesafemac.com/tech-guides/
Sometimes, items may have been inadvertently downloaded by accident or due
to poor advisement, and of those some can be a cause of slowness in Mac OS X.
Also, the use of scanning antivirus software can be a cause of slow and disruptive
system issues; since antivirus for the most part is not effective due to the nature of
the Mac OS X and the inability of an AV application to have records of unknown, &
unsubstantiated or rumored issues in the wild, since few or none are known to exist.
The note in the etrecheck report of excessive Page Outs, implies directly that the
computer may need to have more RAM installed; a matching pair of higher capacity
correct spec RAM chips, could be purchased from a reputable source & installed.
As much as, perhaps 16GB in a RAM upgrade, depending on the MacBook build.
All of those red-lettered items in the report that did not load, appear to be system
parts; perhaps that may be something to investigate. Not sure why that is...
{Because today is part of a weekend, I'd suspect the time of day and weekday are
both behind the lack of an earlier reply to your post here. Also, if there have been
weather or other disruptions in the lives of those volunteers who offer help, then
maybe they've had to modify their plans around such events. Or power outages.
We had one here for more than an hour, and everything went out. Even phones.}
So hopefully some other knowledgable readers may contribute ideas on how to
resolve the issues; troubleshooting may be helpful, and to read through sections
of TheSafeMac to see if there is any malware, adware, or other odd activity that
may point to a cause; removal suggestions for those are in that site. Also, if you
had visited any torrent or sharing sites, or downloaded free yet contaminated items
from software download sites, they could also affect your computer. There are
a few areas in that web site worth reading through.
In any event...
Good luck & happy computing!

Macbook Pro Fan Continues Running After download Error -- Please Help so Loud

Hello,
I recently tried to download the Citrix reciever application onto my Macbook pro. The installation was taking an excessive period of time and it was obvious that something had gone wrong in the download because it had taken several hours and was stuck at a certain step. I tried to cancel the installation but it wouldn't allow me. So I force quit the installation and thought that it was shut down, but I was mistaken. The next time I opened my computer the fan was running at an increased rate and was very loud and the computer was heating up. I tried to restart the computer and it said that the program was still trying to download and that the computer could not be shut down until completed. I got frustrated and basically forced a power down by signing out and holding the power button or something of that nature till it shut down. I waited overnight and then powered it back up but nothing had changed and the fan was still running like crazy but it says the program is not trying to install anymore though. I checked the activity level and CPU but nothing is out of ordinary of high. The program is not anywhere on my computer either so I have no idea what is going on and cannot figure out how to stop this fan running like this. It is draining my battery, overheating my computer and is annoying too.
Any help, hints or ideas would be greatly appreciated or I will be forced to visit the apple store for some help I guess.
Thanks,

Unfortunately, spoke way to early. The fan issue is still a big problem. From the second the machine is turned on, the fan cranks up. Frankly, I think this is overheating the machine to some extent (running the fan at max speeds when it's not even warm). Additionally, the noise caused by this has only gotten worse, and now it is even making a "whistling sound." Looks like I'm going to be making the trek to the Genious Bar, but based on comments by others on this issue I am not optimistic about a fix.

Macbook pro fan suddenly running more

i've had my macbook pro for about 3.5 years. last year, the battery was replaced. it's been running fine but suddenly i notice the fan running a lot more. first it was when i was using my screen saver which is an aquarium - it used to run silently but now the fan is on when it's running. now the fan is running when i'm playing a simple arcade game on-line. again, it used to play silently but now when i play the fan runs. this is a sudden thing that just started happening. any thoughts? do i need to take it to the shop?

Check Activity Monitor
http://support.apple.com/kb/TS1473?viewlocale=en_US&locale=en_US
Reset SMC. http://support.apple.com/kb/HT3964
Choose the method for:
"Resetting SMC on portables with a battery you should not remove on your own".
If this does not help, take the computer to the Apple store.
Best.

Macbook pro fan constantly running on high

Hello i have a problem with my macbook pro
as soon as i start my macbook pro early 2011 up the fan goes immediately on high speed and when i look on on istat it says that the fan in going 0rpm but when i push above the F6 and F7 it suddenly stops and the fan goes to 2028rpm i have tried the smc reset and such and that doesn't work at all. I have looked at activity monitor and there was nothing strange as well so please does someone know how to stop this, its really annoying.

Most intereseting. The display shows temperatures at very acceptable levels but zero fan speed. That cannot be. Try a Apple Hardware Test:
http://support.apple.com/kb/ht1509
You may have to use the OPTION and D keys to start it.
Lets see if that picks up anything.
Ciao.

Macbook pro fan running slow

macbook pro fan is running slow and hot. it fluctuates between 212 and 375 rpms. heat rises up to 104c. do i need to replace the fan?

Before I suggest advice, I urge you to keep your machine under 160F at all times. I don't want to sound like an alarmist, but you can seriously damage your machine with that kind of use. Some solders melt at 225F, weaken at 190F.
You may have to replace the fan - or you may need to clean the inside of your machine and fan. It's hard to tell without inspecting your machine.
Or you may find that you need to get a different browser, and become more aware of temperature; laptop machines are much more sensitive to termperature issues than desktop Macs. Some day, you'll thank me for that advice.

Mainstage 2.1 makes my Macbook Pro fans run full bore.

Upgraded to V. 2.1 and Snow Leopard. Now my Macbook Pro fan kicks in at full blast whenever I play any patches or run backing tracks. Cpu hit looks low and memory usage is average. This never happened before. Any ideas as to what's happening?

My MBP fans have always run at full capacity when using MS 1, 2 or 2.1. They start out running normally but then start to rev up after a couple of minutes. You could try running some fan control software to manually adjust your fan thresholds but ultimately, does it really matter if the fans are running hard? Seems to me that they're running hard because they need to....MS is still very hard on system resources even if the meters say otherwise. It's the only app I run that causes the fans to run flat-out.

2009 17" Macbook Pro fans running at max speed aafter hard drive upgrade.

I recently picked up a 17" 2009 unibody MacBook Pro with Intel Core 2 Duo 2.8ghz, 4gb RAM, SuperDrive and a Samsung 1TB hard drive. The system did not come with the original hard drive and I don't have any other hard drives to test and verify that the new larger hard drive is the cause. I have tried a clean install of Snow Leopard, Lion and even Mountain Lion but no matter what my fans always running at max speed (5k+ RPM). I have looked at iStat and the temps of any of the components in the machine never show more than 42*C so the fans should never be running at full blast. Oddly enough smcFanControl shows 0* temp but fan speds for both left and right are always 5.5k+ and very noisy. Using HDD Fan Control I am able to get at least the right fan to run at a controlable speed but its silence is drowned out by the left fan that still runs on full blast. I have already done multiple SMC resets and PRAM resets with no change in the condition. These noisey fans are driving me insane! I have run every available update as well. Is there a chance that the hard drive or something elses temp not being supported or detectable by OSX is causing the fans to default to the fail safe constant high speed?!

rriggin wrote:
I will have to try that when I get can find the original discs because I have been unable to boot into the diagnostic utility with my Snow Leopard, Lion, or Mountain Lion discs. More than likely I am thinking a sensor failure because even booting into Ubuntu Live USB thumbdrive the fans still run at max.
Well your just a regular pirate. There is no Mountain Lion disks, it's not even out of Beta and avaialble to the public yet
We thought you were just mistaken but now your tech handy enough to boot a Mac off a Linux live USB, so that means you've been bad and downloaded MT Lion off a P2P network or something.
If your beta testing 10.8 your bound to secrecy and not allowed to be discussing it and posting this sort of question on this forum, but the other one.
If you know anything, OS X must "talk" to the hardware or else the default setting is to race the fans. Linux doesn't do this by default as it's designed for generic PC's which a Mac may appear to be one it's not really. Apple only supports OS X and Windows 7 on Mac's, not Linux.
Obviously something on your machine is SEVERLY messed up in hardware, likely a dead sensor, you bought a used lemon that someone didn't want to pay to get fixed.
Want to try Linux?, read this

My MacBook Pro fan runs while sleeping

My MacBook Pro fan runs constantly, even while sleeping.
The problem started about 2-3 months ago, but was pretty rare. When I noticed the problem, I would restart the computer and it would stop for 1-2 weeks. More recently it has become more constant, and now it always has the fan running when it's sleeping.
Any ideas on what I should do? Thanks!

Mine too. If you're worried you might like to try a laptop cooler like one of these:
http://www.amazon.co.uk/s/ref=sr_kk_2?rh=i%3Aaps%2Ck%3Alaptop+cooling+pad&keywor ds=laptop+cooling+pad&ie=UTF8&qid=1344763538
Not sure how well they'd work on a Macbook as there aren't any vents on the underside but it couldn't hurt and they're quite cheep.

Macbook pro fan always running - cpus are pegged by kernel

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