Macbook Pro fans constantly spinning

My MacBook Pro's fans are constantly spinning. I've spoken to support and they think one of my fans may be out of balance and that I should take it in. I really don't have the capacity to be without my Mac at the moment, and I know I should get it sorted, but its not easy.
I've reset SMC, reset PRAM, checked the hard disk, cleared permissions etc....
Reason I did all that is because it's sluggish at times, especially when I have lots of apps open, but I have 16gb ram. SSD Hybrid. This shouldnt be happening.
Any ideas? I tried to find out about doing a hardware test but restarting pressing D doesn't load it up..
Some details about my machine:
MacBook Pro 15-inch late 2011
2.2 ghz i7
16gb ram
OSX 10.9.3
Currently I have Safari open, that is the only app. Although I do also have menubar apps running.
Just don't understand why the fan is always running. It's also very hot too.

Try the Apple Hardware Test by starting the MBP holding the OPTION+D keys.
Also open Activity Monitor and set it to ALL PROCESSES and %CPU to display values from high to low.
Install istat menus:
http://bjango.com/mac/istatmenus/
When the fans start spinning fast, post images of both for inspection.
Ciao.

Similar Messages

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 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.

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.

Macbook Pro Fans Just Went Spinning Nuts

Hi.
So I'm surfing the web (using firefox) have 2 tabs open and suddenly the fans on my macbook pro start to spin faster. Then they spin faster gain finally maxing out at 5360 rpm. The temperature all the time was never above 55 degress C. They spun at 5360 rpm for about 10 minutes and then spun down to a normal level of 3154 rpm.
I checked the processes and some kernal task is up at the top using 1.84 GB of virtual memory. No other programs running but plenty of other tasks listed as sleeping.
First question ... what is the max rpm that the fans should safely spin at?
Second question ... why would it suddenly take off like that spinning fans when there's only one program running?
I had an alienware before and it started running its fans like that after a few months ownership ... a few months later it chew the hard disk and lost a lot of data on me.

The maximum RPM for the MacBook Pro fans is 6000rpm.
I have no idea why the fans would suddenly "take off" like that but try running the Apple Hardware test. You can do this by inserting your original install disk 1, restart the computer with the D key held down until the hardware test starts loading. Once the test has loaded select the option to perform extended testing and then start the test. Note down any error codes and post them here.
Note that when you load the hardware test up the mouse will be very jittery and the computer will appear to freeze during the test, I have encountered this on all the tests I have run and consider it normal behaviour.
Hope this helps
J.C

Macbook Pro Fan Speed

Hi. I was having some trouble with my temperature of my MBP, but I somewhat solved it using Temperature Monitor and smcFanControl. I turned the fanspeed to Higher RPM in the smcfancontrol menu, and my temperatures are down from ~95 celcius to ~65 celcius (when playing Minecraft / other extensive tasks.)
Now, I would like to bring them down more (should I?) because I feel 65 c - 70 c is still really high...
So, my only question is: In smcFanControl, the Higher RPM setting is 4000 RPM, should I change that to 5000 RPM? I know it would help, but, can the fans handle that?
Thanks in advance
Could 70c (max) shorten it's lifespan?
(sorry I just am extremely extremely paranoid)

I am seeing a lot of negative talk about third-party software to control fans:
Istat menu 5 is good.
It conforms to apple's SMC; this means that it will never allow the fans to go slower than what SMC is asking, thus your computer will be safe using this software.
In contrast I have a Macbook Pro fan controller for bootcamping Windows 7 called MacFanx64.exe (64 bit) that requires you to understand command prompt.
It's nothing difficult, you just need to make sure that you enter parameters properly.
The only way I see one of these damaging any hardware components would be if you accidently told the fan to spin faster than the max speed.
I would agree that for OS X you aren't going to really need this because the engineering on the SMC isn't terrible, but if you happen to have SMC screw up like it sounds like you had, there's no way to know it unless you feel it getting really hot like that which I'm sure isn't great for your MBP.
Therefore having a monitor system is helpful because you can see the temperatures constantly.
Now for Windows 7 bootcamp it's a whole different story.
There is something wrong with the drivers that control SMC for bootcamp because the computer will get hot fast even in idle.
I was marking temperatures around 60-70 C just in idle - the fans still stay at 2000 rpm.
If someone finds something better than MacFan for Windows 7 bootcamp let me know.
Moral of the story, if you pick a good third-party application you're not going to harm your computer.
Think of it like a second line of defense.
Last but not least, if you're still having this problem do an SMC reset.
Apple has instructions on how to do it, just note that you need to pay attention to whether your MBP has a removable battery or not when doing SMC reset.
Cheers

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 Trouble.

I recently sent my Macbook Pro Fans to get replaced. The problem was that my fans started to work even when the computer didn't need it. They would accelerate up to 6000 RPM and I would only be running Safari and iChat. Then the computer's fans would start to slow down and then speed back up. I sent in the computer for repair to get the fans looked at and they replaced them. Well the problem is still persisting. Should I call them about it again or is this normal? I only ask because I don't know if it is or not.

I have the same trouble with mine. I took it in for repair as it had a logic board issue, and they gave it back to me yesterday, but when I started using it, the fans ramped up to 6000rpm constantly for the entire day.
This morning I installed Fan Control to see if that would help, but it appears that Fan Control is not actually doing anything. The fans have been stuck around 4400 rpm at 35 degrees celsius even though I told Fan Control not to run at anything above 2000rpm until it gets to 40 degrees.
Is there a mysterious apple setting that says don't go above 35 degrees, or if you do ramp up the fan speed to max until it gets below it again, because according to Fan Control that is what is happening. It is not logical to be wanting to keep a powerful modern laptop at that temperature when the fan noise is so high. 45 degrees would be a fine operating temperature.
BTW, I checked the Hardware test and there is nothing to report from it.

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.

My Macbook Pro fan

My Macbook Pro fan is always running and slows don't my computer, What's the issue and is there various ways to try and solve the issue?

Hey Unknownflavour,
There an be a few different reasons why your fans are running. I'd read up on the function of your MacBook Pro's fans in the following document:
Learn about the fans in your Mac
http://support.apple.com/kb/HT4543
Regards,
Delgadoh

My macbook pro crashes constantly

Okay, so here's the deal:
My macbook pro crashes constantly and it seems to be getting worse.
It's a macbook pro mid 2010 purchase with a 2.66 i7 4gigs ddr3 288mb intel hd graphics running OS X 10.8.5.
The problem occurs in numerous different circumstances. In every case it will cause the screep to go black, crash, restart itself, and give me a message saying it restarted due to an error. After that it will be, seemingly, fine, until I run into another of the myriad instances when it will crash. It's very easy to duplicate so if posting the error message will help I can definitely do that. Here is a list of occasions that the crash currently occurs:
About 20 seconds after opening photobooth.
Sometimes, but not always, after opening iPhoto.
Netflix, whenever I try to watch something instantly.
Trying to update to OS X Maverick.
Certain types of ads on sites that use video seem cause it.
Tried to install Starcraft 2 one time and it doesn't seem to like that either.
Firefox likes to crash about twice as frequently as Safari for some reason.
Honestly, there are probably others, but I just avoid certain programs now because it's such a pain.

Here's one. There's a 3 year time limit? This has only started occuring within the last 7 - 8 months.
Interval Since Last Panic Report: 2350 sec
Panics Since Last Report:          2
Anonymous UUID:                    B316849C-21EA-E3FC-353D-21CE52718035
Fri Dec 20 12:38:35 2013
panic(cpu 3 caller 0xffffff7f8e27cf1a): "GPU Panic: [<None>] 5 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff8098d65000 0x0a5480a2, D0, P3/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.4.5/src/AppleM uxControl/kext/GPUPanic.cpp:127
Backtrace (CPU 3), Frame : Return Address
0xffffff8087c93290 : 0xffffff800c01d636
0xffffff8087c93300 : 0xffffff7f8e27cf1a
0xffffff8087c933d0 : 0xffffff7f8c77026c
0xffffff8087c93490 : 0xffffff7f8c8431f6
0xffffff8087c934d0 : 0xffffff7f8c843254
0xffffff8087c93540 : 0xffffff7f8cb08278
0xffffff8087c93670 : 0xffffff7f8c86bad1
0xffffff8087c93690 : 0xffffff7f8c77703f
0xffffff8087c93740 : 0xffffff7f8c774ad6
0xffffff8087c93940 : 0xffffff7f8c7763ff
0xffffff8087c93a10 : 0xffffff7f8d770903
0xffffff8087c93a70 : 0xffffff7f8d770993
0xffffff8087c93b40 : 0xffffff7f8d750610
0xffffff8087c93ba0 : 0xffffff800c46f789
0xffffff8087c93bc0 : 0xffffff800c470d30
0xffffff8087c93c20 : 0xffffff800c46e74f
0xffffff8087c93d70 : 0xffffff800c098c21
0xffffff8087c93e80 : 0xffffff800c020b4d
0xffffff8087c93eb0 : 0xffffff800c010448
0xffffff8087c93f00 : 0xffffff800c01961b
0xffffff8087c93f70 : 0xffffff800c0a6546
0xffffff8087c93fb0 : 0xffffff800c0cf473
      Kernel Extensions in backtrace:
         com.apple.NVDAResman(8.1.6)[EA4F9902-5AAE-3F1D-A846-3796221C8C91]@0xffffff7f8c7 0f000->0xffffff7f8c9b1fff
            dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7f8c675000
            dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f8c6fb000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f8c6b8000
         com.apple.GeForce(8.1.6)[0E3D8776-A5B7-3D82-9BFD-9188170B358D]@0xffffff7f8d70c0 00->0xffffff7f8d7d9fff
            dependency: com.apple.NVDAResman(8.1.6)[EA4F9902-5AAE-3F1D-A846-3796221C8C91]@0xffffff7f8c7 0f000
            dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f8c6fb000
            dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7f8c675000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f8c6b8000
         com.apple.driver.AppleMuxControl(3.4.5)[49FEF732-D7A3-327B-A7AA-6AC5A6E3DCFF]@0 xffffff7f8e26f000->0xffffff7f8e281fff
            dependency: com.apple.driver.AppleBacklightExpert(1.0.4)[B5B1F368-132E-3509-9ED5-93270E3ABB DD]@0xffffff7f8e26a000
            dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7f8c675000
            dependency: com.apple.driver.AppleGraphicsControl(3.4.5)[4A2C8548-7EF1-38A9-8817-E8CB34B8DC A6]@0xffffff7f8e256000
            dependency: com.apple.iokit.IOACPIFamily(1.4)[A35915E8-C1B0-3C0F-81DF-5515BC9002FC]@0xfffff f7f8c5f3000
            dependency: com.apple.iokit.IONDRVSupport(2.3.7)[F16E015E-1ABE-3C40-AC71-BC54F4BE442E]@0xff ffff7f8c6fb000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.7)[9928306E-3508-3DBC-80A4-D8F1D87650D7]@0 xffffff7f8c6b8000
         com.apple.nvidia.nv50hal(8.1.6)[3455BCFE-565A-3FE5-9F0B-855BCB6CC9B3]@0xffffff7 f8c9bd000->0xffffff7f8cc90fff
            dependency: com.apple.NVDAResman(8.1.6)[EA4F9902-5AAE-3F1D-A846-3796221C8C91]@0xffffff7f8c7 0f000
            dependency: com.apple.iokit.IOPCIFamily(2.8)[2FAEA49C-EA4C-39C6-9203-FC022277A43C]@0xffffff 7f8c675000
BSD process name corresponding to current thread: WindowServer
Mac OS version:
12F45
Kernel version:
Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64
Kernel UUID: EA38B02E-2B88-309F-BA68-1DE29F605DD8
Kernel slide:     0x000000000be00000
Kernel text base: 0xffffff800c000000
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 2299346361618
last loaded kext at 266938736717: com.apple.filesystems.msdosfs          1.8.1 (addr 0xffffff7f8e380000, size 65536)
last unloaded kext at 327985914128: com.apple.filesystems.msdosfs          1.8.1 (addr 0xffffff7f8e380000, size 57344)
loaded kexts:
com.apple.driver.AppleHWSensor          1.9.5d0
com.apple.iokit.IOBluetoothSerialManager          4.1.7f2
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AGPM          100.13.12
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleHDA          2.4.7fc4
com.apple.driver.AppleMikeyHIDDriver          124
com.apple.driver.AppleMikeyDriver          2.4.7fc4
com.apple.driver.AppleSMBusPCI          1.0.11d1
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.ApplePolicyControl          3.4.5
com.apple.driver.AppleLPC          1.6.3
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.1.7f4
com.apple.driver.AppleMuxControl          3.4.5
com.apple.GeForce          8.1.6
com.apple.driver.AppleUpstreamUserClient          3.5.12
com.apple.driver.AppleMCCSControl          1.1.11
com.apple.driver.AppleSMCPDRC          1.0.0
com.apple.driver.AppleIntelHDGraphics          8.1.6
com.apple.driver.AppleIntelHDGraphicsFB          8.1.6
com.apple.driver.AppleSMCLMU          2.0.3d0
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.SMCMotionSensor          3.0.3d1
com.apple.driver.AppleUSBTCButtons          237.1
com.apple.driver.AppleUSBTCKeyboard          237.1
com.apple.driver.AppleUSBCardReader          3.3.1
com.apple.driver.AppleIRController          320.15
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          34
com.apple.iokit.SCSITaskUserClient          3.5.6
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.3.5
com.apple.driver.AppleUSBHub          635.4.0
com.apple.iokit.AppleBCM5701Ethernet          3.6.2b4
com.apple.driver.AirPort.Brcm4331          615.20.17
com.apple.driver.AppleUSBEHCI          621.4.6
com.apple.driver.AppleFWOHCI          4.9.9
com.apple.driver.AppleAHCIPort          2.6.6
com.apple.driver.AppleSmartBatteryManager          161.0.0
com.apple.driver.AppleACPIButtons          1.8
com.apple.driver.AppleRTC          1.5
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          1.9
com.apple.driver.AppleACPIEC          1.8
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          214.0.0
com.apple.nke.applicationfirewall          4.0.39
com.apple.security.quarantine          2.1
com.apple.driver.AppleIntelCPUPowerManagement          214.0.0
com.apple.iokit.IOSerialFamily          10.0.6
com.apple.kext.triggers          1.0
com.apple.driver.DspFuncLib          2.4.7fc4
com.apple.iokit.IOAudioFamily          1.9.2fc7
com.apple.kext.OSvKernDSPLib          1.12
com.apple.nvidia.nv50hal          8.1.6
com.apple.iokit.IOSurface          86.0.4
com.apple.iokit.IOBluetoothFamily          4.1.7f2
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.1.7f2
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.driver.AppleGraphicsControl          3.4.5
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.driver.AppleHDAController          2.4.7fc4
com.apple.iokit.IOHDAFamily          2.4.7fc4
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.NVDAResman          8.1.6
com.apple.iokit.IONDRVSupport          2.3.7
com.apple.iokit.IOGraphicsFamily          2.3.7
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.IOPlatformPluginFamily          5.4.1d13
com.apple.driver.AppleSMC          3.1.5d4
com.apple.driver.AppleUSBMultitouch          237.3
com.apple.iokit.IOSCSIBlockCommandsDevice          3.5.6
com.apple.iokit.IOUSBMassStorageClass          3.5.2
com.apple.iokit.IOUSBHIDDriver          623.4.0
com.apple.driver.AppleUSBMergeNub          621.4.6
com.apple.driver.AppleUSBComposite          621.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.5.6
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.iokit.IOAHCISerialATAPI          2.5.5
com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.6
com.apple.iokit.IOUSBUserClient          630.4.4
com.apple.iokit.IOEthernetAVBController          1.0.2b1
com.apple.iokit.IO80211Family          530.5
com.apple.iokit.IONetworkingFamily          3.0
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOAHCIFamily          2.5.1
com.apple.iokit.IOUSBFamily          635.4.0
com.apple.driver.AppleEFINVRAM          2.0
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IOHIDFamily          1.8.1
com.apple.iokit.IOSMBusFamily          1.1
com.apple.security.sandbox          220.3
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.DiskImages          345
com.apple.iokit.IOStorageFamily          1.8
com.apple.driver.AppleKeyStore          28.21
com.apple.driver.AppleACPIPlatform          1.8
com.apple.iokit.IOPCIFamily          2.8
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.corecrypto          1.0
Model: MacBookPro6,2, BootROM MBP61.0057.B0F, 2 processors, Intel Core i7, 2.66 GHz, 4 GB, SMC 1.58f17
Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB
Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334648302D4346382020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353637334648302D4346382020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.106.98.100.17)
Bluetooth: Version 4.1.7f2 12718, 3 service, 21 devices, 3 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: Hitachi HTS545050B9SA02, 500.11 GB
Serial ATA Device: MATSHITADVD-R   UJ-898
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfa130000 / 5
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0236, 0xfa120000 / 4
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 3
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8218, 0xfa113000 / 8
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: Built-in iSight, apple_vendor_id, 0x8507, 0xfd110000 / 4
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 3

Do you think my macbook pro fan could be broken?

Earlier today when I opened my laptop the screen was black and it appeared to be shut down. I hit the restart button and when the screen came up it said that I had "shut off my laptop due to a problem", though I did not manually shut it down. It was working 100% fine yesterday, so I'm not sure what could have happened to it. I know it wasn't my battery, because I had a full charge prior to shutting it and upon restart I still had a reasonable charge. I was more or less ignoring my laptop's unusual pop-up until I noticed that my computer was feeling much hotter than normal, so I checked iStat pro to look at temperatures. The CPU temp was around 82 degrees or so when I checked, while I was playing a videogame, which doesn't seem too high but the area around my keyboard felt much hotter to the touch than normal. What is really concerning me is that iStat says my fan is running at 0 rpm, even while I was playing a graphic-intensive game. The CPU is down to 65 degrees since I have stopped playing the game, however I have heard that your laptop will shut itself off to prevent overheating, and I'm wondering if this is what happened to my laptop sometime between yesterday and today. Does it sound like my fan could be broken? There isn't an apple store very close to me and my warranty just ended so I'd rather work it out myself if possible. I don't believe it is a faulty sensor either as iStat gave me temperature readings for everything. If you think my fan is broken, do you have any advice or know how much it would cost to fix/replace?

Good detective work.
I don't believe that 80ºC is extreme for occasional use, but over extended periods of time, this can stress your machine. I beleve you should visit your local Apple Store. They can determine if the fan is broken.
In the meantime, I could avoid:
- CPU-intensive activities like 3D gaming for extended periods of time.
- Using your notebook on your lap. That can raise its temperature thirty or more degrees.
- Dust or dirt can choke the fans, increasing temperatures and even the risk of fire.
Replacement of a fan is not very expensive, if it comes to that. You can also do it yourself:
http://clarebayley.com/2011/10/how-to-replace-a-macbook-pro-fan/

HT202179 MacBook Pro Fan is very loud overnight. How are they replaced?

MacBook Pro Fan just started to make a lot of noise.This is a MacBook Pro 15 inch 2.4/2.2GHz purchased June 2007. Is this something that most people can replace or does Apple need to fix it or is it time to get a new one base on age and potential repair cost?

Your Mac uses measured temperatures to determine fan speed in a feedback loop.
Racing fans are an indication that your Mac is overheating, or a temperature sensor is not working properly. Replacing the fan will not fix the problem.
Your appointment for an evaluation at the genius Bar of an Apple store is free, in warranty or out. There is no obligation to have them do any work for a fee, but if you choose to, charges are generally flat rate for guaranteed repair, no surprises.
If you recently replaced components, such a RAM DIMMs, with parts that do not have Apple-approved temperature sensors, that can also cause such problems.

MacBook Pro fans are deafd

Hi all.
After some unexpected shutdowns, I discovered that my MacBook Pro fans are both dead. iStat Pro shows them always at 0rpm and after some hardware testing with Tiger DVD I get the error code that fans are broken.
When MacBook Pro gets too hot it just shuts down so I wanted to repair it but I'd like to know an aproximate cost. Apple shops here in Barcelona (Spain) say they first want to ckech the laptop out (paying, of course) but i don't know if two broken fans can imply a motherboard change or whatever that can be expensive or worth it.
Any idea of an aproximate cost?
Thanks.
R.-

You should have it checked out by an authorized service provider to make sure nothing else is wrong. Better to be safe than sorry.

Macbook Pro fans constantly spinning

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