The fan of my imac suddenly stays turning and very noisy!
the fan of my imac sudddenly starts to turn, and very loudly. I can't stop it, unless I set off the Mac..What tot do?
http://support.apple.com/kb/HT3964?viewlocale=en_US
These instructions have recenty been modified. They used to read hold the power button in for five seconds after unplugging. I'd try it both ways.
Similar Messages
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Does anyone know why the fan on my imac wont turn off?
does anyone know why the fan on my imac wont turn off?
Peter.L.
Try resetting the SMC, it may take 2-3 attempts. Please post back with the results. If you're not sure how please follow the instructions in Intel iMac SMC and PRAM resets -
how do I turn on the fans on my iMac to keep it from overheating?
You could use smcFanControl. That will control the fan speed but be aware the fan is always running. If you have a fan revving up due to overheating it could be because a temperature sensor is failing. Try running Apple Hardware Test (on your second installer DVD -- boot with the D key) to see if can detect any sensor problems.
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The fan on my imac runs fast and doesn't stop.
The fan on my imac runs fast and doesn't stop. I have to shut down the computer to get it to stop.
Why is it doing that and how do i stop it?Reset the SMC using the directions below:
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
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. -
The fan on my iMac runs on and off
It has been a while now and i didn't really think much of it but the fan on my imac keeps running really loudly on and off. i don't really know much of the terms people were using while reading other discussions but i want this noise to stop!! please help me!
When you close the applications does the fan slow after a few minutes or keep on sounding loud? If it quietens down then one of your aplications is is working hard and the fan is keeping things cool, if the noise does not stop then you could have a hardware fault.
Try resetting the Pram and SMC, link is to the SMC reset and the page has information on a link to teh PRAM info.
http://support.apple.com/kb/ht3964
After that I think you will need some local advice, perhaps an Apple store. -
The fan on my iMac never shuts off?
The fan on my iMac never shuts off? Would someone be able to suggest what is the probable cause of this and what can I do about it?
Sometimes an SMC reset can help resolve this. If it fixes it but proves to be temporary a trip to the workshop may be needed:
http://support.apple.com/kb/ht3964 -
The fan in my imac would not stop
The fan in my imac doesn't stop at all. i have updated the software to mac os 10.6.8. i have restarted but no luck wat do i do?
It may only need a SMC reset, please click iMac SMC and PRAM reset for instructions. Please let us know if that takes care of the problem.
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The fan on my macbook will not turn off
Please help. the fan on my macbook will not turn off. Also, my battery is no longer showing a percentage.
ThanksHmmm. You have done the basics. If you open the ActivityMonitor app in the Utliities folder, select CPU usuage in the column- flip it so highest % is on top. Is ther an app in that column that is spiked? Quit that app.
You can run the Apple Hardware Test by booting holding the D key on restart, this may generate an error code. Not the most complete test but it is a start.
If no AHT- Boot off your Install Disk while holding down the d key, (not c key), then run the extended Apple Hardware Test. Some disks require you to use the Option key at bootup to select AHT. Some models have a separate AHT CD. -
my new 3 month old imac 27 with 10.6.8 snow is giving a **** of noise from the fan. suddently starting after today starting up. and the volume buttoms and screen lights up and down not working any more.. any one who can help here???
Try an SMC Reset. (System Management Controller)
Shutdown>unplug from power for ten minutes>press and hold in the power button for ten seconds>startup again.
Also try a PRAM Reset. (Parameter RAM)
Shutdown. At the bootup chime, hold down CMD-Option-P-R together, wait for two more chimes, total three, then let go of all keys to finish booting,
If this doesn't do it, run the Hardware Test in Extended
http://support.apple.com/kb/ht1509 -
Imac screen stays black and chimes when started
My iMac screen stays black and chimes when started.
Impossible to help if you don't at least fill out a profile that tells us which iMac you have, what version of OS X is installed, how much RAM the system has etc....
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Why are the graphics/page in facebook suddenly smaller font and images? Is not happening in IE and screen resolution is correct.
I heard back from Nike+ support and they said that there will be newer pics soon and it also appears that this corrected itself for my runs, but not the user pic, I only get girly options, I wouldn't mind a picture of a guy on 'ROIDS!!! Just kidding, but something less feminine or cartoon like, I'm trying to be serious about this and the site should reflect that.
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How can I organise the program dashboard the way that it does not open automatically and very quickly other programs?
Thanks for an answer
Reinhard Voegele
SwitzerlandIf you hold down the option key while in dashboard you can close many of the programs.
To disable it from opening automatically, or unintentionally:
1) go to System preferences -> mission control.
2) Deselect any mouse shortcuts
3) Remove it from hot corners, if it is active. -
the fan on my imac9.1 keeps running..i shut it down and pulled the plug..did not help
The fan minimum speeds are about 1200 rpm, so if the Mac is powered on and not sleeping, they're running.
An iMac's exhaust fans will not run if its power cord is disconnected. If that's what you meant to write, you're hearing something else. -
Why is the fan in my iMac running so much after Mountain Lion update?
For some reason, I seem to notice the fan on my 4 year old iMac running constantly, even with very few processes running (only Mail and Safari) after the upgrade to Mountain Lion. Anyone else have this problem? Anyone have a solution?
Sorry, guys (or girls), but NONE of this worked. I shut down, pulled the plug, restarted, Zapped the VRAM, restarted, several times...I mean, at least 4. There were NO major processes going on according the Activity Monitor. And with only Mail open, the fan began to run at high RPM (HD fan at 1486, CPU fan at 3896, CPU temp 41, CPU heatsink temp 41, GPU Diode temp 95, GPU Heatsink temp 90) almost immediately...and it has yet to go off. I suspect it won't do so until I leave it alone and it "sleeps" for a while. I have read that other people have this problem too, and it clearly is related to something in Mountain Lion, since that was the triggering event. I believe Apple must be advised that this is a software glitch, and they should work on getting a patch out to us.
Any more advice? I'd love to hear it. -
My mac book pro wont start only the fan starts running when i turn it on but no display is shown on the screen
Have you tried this yet?
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support
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