IMac fan running all of the time

iMac fan running all of the time - how to stop. seems that after several hours iMac then shuts down on it's own accord.
Is there any help online - or take the 15 month old iMac to the shop ?

You can try an SMC reset, which can sometimes fix a goofy fan:
Shut down the computer.
Unplug the computer's power cord.
Wait fifteen seconds.
Attach the computer's power cord.
Wait five seconds, then press the power button to turn on the computer.
What you're describing, however, sounds like a temperature sensor that's either acting correctly or it's not. I'd install iStat Pro from http://islayer.com/apps/istatpro/ , and monitor the temps and fan speeds.
I'd also run the Apple hardware test to see if it finds any obvious hardware issues. This Apple note tells how to run it: http://support.apple.com/kb/HT1509 (if you have Snow leopard, look down towards the bottom of the note for directions).
When the fan starts roaring, have you looked at your Activity Monitor (on your hard drive in applications/utilities) to see if there are any programs that are driving up CPU usage to high levels? That could contribute to an overheating situation.

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Fan running all of the time

Hi,
I really need some advice as I am a mac novice. My 15" mac book pro is about a year old. I have the 2.16 core 2 duo model. Over about the last 5 days I have noticed that my fan has been running constantly. Not the very fast mode but more of the medium speed. Originally I thought that maybe spotlight was indexing but if that were the case it would have been finished by now.
I tried closing down all applications and doing a restart and that did not fix the problem.
I then tried going into activity monitor and really do no know wha any of this stuff really means. except based on the graphic unde CPU usage it looks like my CPU is being utilized. In addition it says Threads 252 processes 66. Whatever that means.
At this point I don't know what else to do or how to troubleshoot this. I am hoping someone can give me some advice.

What is your highest CPU reading in the Activity Monitor and what process is it?
Try resetting your SMC.
Resetting the System Management Controller >>
-Bmer
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Should I leave my imac turned on all of the time?

Should I leave my imac on all of the time....and if so why?..Thanks

The debate is as old as computers themselves.    The most important thing to remember, is lightning is a machine's worst enemy, and no surge protector can defend against all lightning strikes. As the proverbial Clint Eastwood said: "Do you feel lucky today?"
Look at your energy usage on your electric bill on a similar month weather wise with and without the computer on all the time.
See if you can run with Energy Saver on without freezes, as many third party devices don't support Apple's low power mode.
Once a month it is good to run in Screen Saver instead of Energy Saver as cleaning up happens on the system upon wakeup from sleep, or in the middle of the night if only Screen Saver or nothing is running but applications.   Energy Saver delays that cleanup. You can get Macjanitor or Anacron to run that cleanup when you want.

MacBook (2008) fans running most of the time

Hi!
I have a late 2008 white MacBook. Recently, my MacBook's fans have started to run almost all the time, even when usage isn't very heavy. Currently, as I'm writing this post, they are running at 6115rpm, CPU is at 69 degrees, Airport card at 61 degrees, and CPU usage is constantly at around 40%. I have a messaging programme on, I am writing this post and watching a Youtube video at the same time, which doesn't to me seem to be particularly heavy usage. However, the fans are constantly running.
The fans kick in pretty much instantly these days, whenever I play a Flash game, watch a video or do Skype. Not forgetting a combination of browsing and messaging.
My question is: is this normal? I understand that as MacBooks go, mine is starting to get a little old. However, it is in stellar condition, and the battery health is still at 90% with 671 cycles. Is there anything I can do? I want at least another year or more of quality life out of my MacBook until I plan on buying a new one, and am willing to try saving the fans on my MacBook!
Any help is much appreciated!
-T

Hey Tiia Hurri & welcome to the forums.
It's absolutely normal for your fan to kick in very quickly if you're video chatting or viewing any kind of Flash content. You'll probably see a higher CPU temp as well--all normal.
Your computer only has the one fan. You're doing a very good job by keeping an eye on the temperatures. You probably have nothing to worry about unless you notice the fan has stopped coming on or you see it running when you having nothing CPU-intensive going.
Unfortunately, YouTube does fall under that "CPU-intensive" category. My fan kicks in whenever I watch a YouTube video.
I wouldn't worry about getting another year out of the computer--it sounds like your machine is doing very well & that should continue for a while.
The one thing to watch is your battery's health--anything over 300 cycles can mean your battery will abruptly stop working, so keep an eye on this.
~Lyssa

Pink HP mini 110 fan runs all the time...

Dear HP and community,
Does anyone know if it is normal for the fan in my HP mini to run all of the time? I love my pink little HP mini but the fan running all of the time is rather annoying. I got my HP mini at Best Buy and now they no longer have the HP mini in pink at Best Buy... If this is a mechanical problem, would I have to exchange my computer at Best Buy or would HP be able to help me so that I could exchange it for another pink one? I guess I'm getting ahead of myself! I hope it is an easy fix but am afraid since I've only had my mini for a few weeks....
Thoughts?
Erin

You probably should repost this in the notebook hardware forum where you will find other Mini users to compare notes. I have heard that the fan on the Mini comes on frequently, but not as you described (all the time). On the netbook front, I am still using the Asus 1000H, which is whisper quiet BTW.
If your 110 is determined to be faulty, HP will probably choose to repair it if it is still under warranty.

Brand new iMac 3.4GHz fan runs all the time - how do I stop it?

Hi, just opened my shiny new imac but the fan runs all the time and very loud! Has anyone any ideas how to fix this or should I return the imac to apple?
I've also noticed that none of my external drive icon show up on the desktop - nor does the imac hardrive icon appear - any ideas?
Thank you in anticipaction.

Try an SMC reset, you may need to do it at least 2x.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

IMac Fans running at maximum speed all the time

Hi Appleians!
I have an iMac 20inch with 8GB RAM and its an i3 intel processor. I purchased it from a friend of mine who had replaced the original hard drive with another that amounts to a terabyte. Now the fans are running at full speed all the time making it way too noisy to work with. It however works smoothly with no problems except the fans are irritating, it does not heat up though. Anyone with a solution? I tried resseting the SMC it didnt work.
`Oh and the computer is running on Mavericks.
Please help!

See the suggestions by mende1 here > Mac fan runs all the time

Fan runs all the time after OS X Mavericks installation, how do I turn fan off?

Fan runs all the time after OS X Mavericks installation, how do I turn fan off?

Rest the SMC, do it 2-3 times. Please click Intel iMac SMC and PRAM resets for instructions.

Fan runs all the time after upgrade to 10.4

Upgraded to 10.4 about a week ago and now the fan runs all the time. I lowered the processor to reduced performance because the fan noise was very loud. Doing this lowered the fan speed but did not stop it. Memory usage is not a problem, shows 75% free.
Before 10.4 was using 10.3 fan ran at times but never all the time.
Any ideas.

Tom, have you down loaded an app like "X Resource Graph", I think I got it at VersionTracker, which will tell you what fan is running at high enoug rpm's to generate noise. Plus it will give you cpu usage and temps plus hard drive temps. If its the cpu fan and the cpu is really working, go to the Activity Monitor in the utilities file and see what app is causing the problem. I don't know what to do if it's the hard drive or system fan. My system fan rarely goes over 1800 rpm, my hard drive stays between 2000 and 2200 but my cpu fan will accelerate when its under pressure to to over 3000 rpm. I just start hearing the cpu fan when it gets to 2400 rpm.

Laptop fan runs all the time, broker runtime cpu usage after Windows 10 final upgrade

ENVY 17t-J100 Leap Motion, 16 GB RAM, i7, SSD primary, HDD secondary drives. Avast antivirus free. Windows Firewall. The laptop had Windows 8.1 and everything was great. I did the Windows 10 Home free upgrade on Day 1. Everything seemed fine. Fingerprinter reader and everything works. Great. But then I noticed that the fan was always running and the left side of the metal casing gets hot. In task manager heat map sorted by CPU usage, Broker Runtime is at the top. Not much ram, about 10 MB. But the CPU usage is always 20% and higher. Doesn't seem like much. But it makes the fan run all the time and the laptop heats up with it running all the time. Anyone else seen this? General internet searching shows this has been an issue with Broker Runtime since Windows 8 and not unique to any brand of computer. But it wasn't like this when I was using WIndows 8.1 One forum said it was the P2P Windows update feature and my laptop was sharing updates. So I disabled that and rebooted. No change. Now I see some people saying it is the Live Tiles features in the Start Menu. But I had live tiles with the WIndows 8 menu and no issues. The only way to disable Live Tiles globally is to edit the registry, and I shouldn't have to do that for this. And I like Live Tiles. So not sure that really is the issue either.

hockeycanuckjc wrote:
Have all Windows Updates on Windows 10 been applied since installing it? I know there are people weary to update Windows 10 since there have been a few news reports with some people having the infinite reboot loop after installing a particular update For me, yes. All updates applied and automatic updates enabled. This Runtime Broker issue has been there since the upgrade and all updates to this point.

Long motor test error did not reach target speed in time. fan runs all the time. sensor is connected. do I have a bad fan? speed in time speed

ran apple hardware diagnostics. fan - master - long motor test error: did not reach target speed in time. fan runs all the time. sensor is connected. do I have a bad fan?

ran apple hardware diagnostics. fan - master - long motor test error: did not reach target speed in time. fan runs all the time. sensor is connected. do I have a bad fan?

T61 fan runs all the time on AC, does not when on battery

Hello,
with the lastest BIOS (and those before) my T61's (8889) fan runs all the time when it is AC powered. (After initial start it begins with 0, then ~2500 rpm, then ~3100 rpm and then stays there even if idle).
When on battery under the same circumstances, it doesn't go above ~2500rpm (which is far less noisy then the ~3100rpm level) and often it even stops.
As far as the BIOS settings allow, it is trimmed to max. power saving also when AC powered but still it's getting on my nerves.
Can Lenovo please look into this and make it as quiet as it is on battery also when on AC?
P.S. I cannot see that the temperature levels as reported through ACPI are any higher on AC then on battery, so I don't understand why the fan has to run all the time that loud when on AC.
Thanks,
Daniel

Hi Daniel,
There are two options for you to consider:
1) Better CPU speed management:
- Install a utility called "RMClock" to better manage the CPU (it's a free utility that throttles the CPU to run at different speeds depending on the needs - the CPU speeds increase automatically to full power when required).
- By regulating the CPU speed, the fan will not need to work that often to expell hot air, because the CPU generates much less heat.
- you will find a quick "how-to" for using RMClock --> HERE
2) BIOS thermal management
- You can change the BIOS settings for the "thermal management" (enter BIOS, choose "Config", then "Thermal Management" ) . Change the fan control from "performance" to "battery optimized" under the "plugged-in" option. This will reduce the frequency with which the fan runs, but beware that if your system is plugged in and you're not using any CPU management - meaning that your CPU is running at full speed, then the system will heat up more than you'll be comfortable with!!
I would therefore suggest that you use a CPU throttling management utility (like RMClock mentioned above) together with the thermal management option in your BIOS. This will reduce the frequency with which the fan starts and operates but still keeping the system cool.
A completely different approach is to install and use "Thinkpad Fan Control" -- read this thread ... Be aware that the utility takes a lot of tweaking to get the settings right, but also be aware that you can damage your system if you do not make the right settings!!!
Hope this helps!
Steve
Message Edited by icantux on 07-09-2008 02:18 PM

Fan is running most of the time

I bought a new DV6-6c53cl a week ago, fan is running most of the time. I updated all the drivers, Bios is F12. The laptop does not feel like being too hot, I am in a 68 F environment, not running games. In fact this morning, I have Outlook open and a couple of browser sessions and still, it barely stop running. It is annoying to a point that i am considering returning it!
Any advice would be really appreciate.

Hi Rdore,
Welcome to the HP Forum! Congratulations on your new notebook.
I doubt there is anything wrong with the fan since the system is so new; there are some things you can check (and possibly adjust) to make sure the system is operating efficiently.
Take a look at this document:
Reducing Fan Noise (Windows 7)
Comments:
The dv6 you have purchased should provide good service - HPs do run hot compared to some brands on the market - the fan settings are usually adjustable to some degree. You will find the computer serves you better when the fan is allowed to run as necessary to keep the notebook cooler. Never put the notebook on a bed, couch, or carpet... or your lap for extended periods. Contrary to the name, HP notebooks are not laptops; they are smallish computers with lids. They don't take well to being smothered.
If you use your notebook on a desk, keep it elevated to allow good air flow - this will help reduce the load on the fan. You might consider a laptop-cooler; these run quiet and reduce notebook fan noise by keeping the notebook cooler, especially during gaming or heavy load. There are lots of posts here on the forum on the subject and you can learn alot by reading as many of them as you find interesting.
I hope this helps.
Say “Thanks” for the Help -- Click the Kudos Star whenever you find a Post that helps you.
Fixed? Mark this Post “Accepted Solution” to say the solution worked for you.
Kind Regards,
Dragon-Fur

My brand new Envy 4-1030us model's fan is running most of the time. it is noisy and annoying.

Just bought HP Envy 4-1030us 2 days ago and i have configured my needful software. The fan seems to be running most of the time (battery or powered) and it is very noisy and annoying. I turned off the coolsense too but still noisy. Pls let me know what to do? Is it problem with the laptop. Should I return?

You can enter the BIOS and disable the "Fan Always On" setting.
I suggest leaving the coolsense on.
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2015 Microsoft MVP - Windows Experience Consumer

IMac fan running constantly is this ok??

ok so i got my 21.5-inch, Mid 2011, 2.5 GHz Intel Core i5 iMac and i can hear the fans running constantly so i was wondering if this was ok or not so i downloaded stat pro to check my fan speeds and my fans are running at:
Optical Drive 1399rpm - No disc in
Hard drive 1099rpm
Cpu Fan 1190rpm
i was just wanting to no if they look right or not?
please let me not thanks

Hi Aldan,
all the fans run all the time, they never stop.
It might make you feel better to get aftermarket Pref. panel like 'Fan Control' which displays the speed in your Menu Bar & you can adjust the speeds also, if you wish.
And by the way those speeds are normal.

IMac fan running all of the time

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