Why is my fan suddenly so loud?

I turned off my iMac24 (not one of the new shiny ones) and went to bed, then I went to work came home and turned it on again. Suddenly the fan is running like crazy and really loud.
Any ideas? Am I going to have to send it in for repair?
Thanks in advance

Nothing that I am aware of -I didn't even know you could get such a thing
Message was edited by: crease_up

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Why is my fan running so loud?

I purchased my 13" macbook pro about 2-3 weeks ago, But have noticed just recently my fan running quiet loud and constantly. I have done two smc resets that didn't change anything, checked my activity monitor to find nothing wrong, and checked my exhaust rpm and temperatures which were perfectly normal. Does anyone have any other information that would help me fix this frustrating problem?

sebbynowak wrote:
I purchased my 13" macbook pro about 2-3 weeks ago
You are still under warranty. Call Apple Care. Make sure you get a case number as all repairs have an additional 90 days of warranty.
#1 - You have 14 days from the date of purchase to return your computer with no questions asked.
#2 - You have 90 days of FREE phone tech support.
#3 - You have the standard one year Apple warranty.
#4 - If you've purchased an AppleCare Protection Plan, your warranty last for 3 years. You can obtain AppleCare anytime up to the first year of the purchase of your computer.
Take FULL advantage of your warranty. Posting on a message board should be done as a last resort and if you are out of warranty or Apple Care has expired.

Fan suddenly much louder

Two days ago when starting iMac fan was much louder!

For fan issues, reset the SMC > Resetting the System Management Controller (SMC)

Fan suddenly runs loudly for no reason

OK this is a weird one. I was running my iMac this evening, doing just general stuff (running Google Earth, actually), when suddenly the fan kicked in and started roaring loudly for about a minute, before subsiding back to its usual near-silence.
It actually sounded at first as my drive had started to spin, but I had no disk in the drive. I've had the computer since December and it has never made this sound before.
Any idea what might have caused this? It's concerned me enough that I'm performing an emergency backup of vital documents, just in case. This actually spooked me more than the loss of Windows XP access that resulted from updating to 10.4.9 last night (but that's another thread).
Cheers
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Hi Alex
As it returned to "normal" I doubt if anything is wrong but it would be worth having a temperature moniture app to monitor things - either of these are good products.
iStat Pro which is a widget and gives temperature and fan speeds as well as other monitors
http://www.apple.com/downloads/dashboard/status/istatpro.html
Temperature Monitor which is just for temperatures and displays on the desktop
http://www.bresink.de/osx/TemperatureMonitor.html
chris
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Fan suddenly very loud

I've had my dual G5 1.8 for about 18 months. Today something happened that has me concerned.
I left the computer for ten minutes. When I returned, the fan was blasting, so loud i could hear from two rooms away. The screen displayed a message in several languages telling me to reboot. so I shut it down. i turned it back on about 3 hours later. so far everything seems OK. i don't have any programs running in the background. At least none that i know of.
Can someone explain what happened. More important, do I need to do anything to fix it?

I found the panic.log. What I am copying, below, appears to document the pertinent kernal panic. If anyone can offer a translation into English, it is appreciated, so i can remedy the problem:
Thu May 4 14:04:44 2006
Unresolved kernel trap(cpu 0): 0x300 - Data access DAR=0x000000001A77BC18 PC=0x0000000000A22E48
Latest crash info for cpu 0:
Exception state (sv=0x3A13CC80)
PC=0x00A22E48; MSR=0x00009030; DAR=0x1A77BC18; DSISR=0x40000000; LR=0x00A9CF04; R1=0x220FBD00; XCP=0x0000000C (0x300 - Data access)
Backtrace:
0x00033820 0x00A9CF04 0x00A972E4 0x00AA2108 0x002CF808 0x000A9894
Kernel loadable modules in backtrace (with dependencies):
com.apple.driver.AppleFWOHCI(2.5.2)@0xa8d000
dependency: com.apple.iokit.IOPCIFamily(1.7)@0x459000
dependency: com.apple.iokit.IOFireWireFamily(2.0.9)@0x9ff000
com.apple.iokit.IOFireWireFamily(2.0.9)@0x9ff000
Proceeding back via exception chain:
Exception state (sv=0x3A13CC80)
previously dumped as "Latest" state. skipping...
Exception state (sv=0x3A13C000)
PC=0x00000000; MSR=0x0000D030; DAR=0x00000000; DSISR=0x00000000; LR=0x00000000; R1=0x00000000; XCP=0x00000000 (Unknown)

Fan suddenly becomes loud

I have had my A665D-S6059 for almost a year now, and the fan has been working perfectly all the time. But just last week I noticed a different sound when I started up my laptop one day. I checked the CPU temp and it is normal, and even when I gamed on the laptop it didn't produce such a loud noise. It sounds like something is in the fan. Should I disassemble the laptop and clean the fan?

Opening a laptop like that will void it's warranty. You might want to have it serviced if it's still under warranty, especially if the warranty is about to expire soon.
- Peter

Macbookpro Fan suddenly spin fast and loud whereas it's not hot

Hello, i have an issue with my new macbook pro 13 early 2015, i had it for about 1 month now, when i use may mac on easy task (not on high load) my fan suddenly spin so fast and make loud noise whreas my mac isn't on hot condition and i use it on room temperature enviroment, an not so long after that, it comes back to idle... anyone have solution for this?
Thanks
note : it's happened just 3 times since i bought this laptop...

A new Mac comes with 90 days of free tech support from AppleCare.
AppleCare: 1-800-275-2273
Try resetting SMC.
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".
Best.

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The fan is so loud and my computer is slowing down it on mas os x snow leopard version 10.6.8

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I have a 2010 MacBook that the fans rarely spin up 100% and is extremely quiet when doing the same things that I do on the black MacBook. This MB is on Lion.
There may be nothing you can do but depending upon which model you have, you can take off the bottom cover and make sure the fans are clean and not blocked by dust.

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I just had my 2006 24" iMac 2.33 Ghz Intel Core 2 Duo repaired due to video card (nVidia GeForce 7600 GT) failure and a refurbished card was installed. Now, for some reason my fan is very loud. I did the SMC reset procedure four times and the fan is still loud. Any further suggestions would be appreciated. Thanks!

When I had my new hard drive installed and extra memory two months ago, the tech said that he removed dust from inside the Mac. When I just went to pick up the Mac after the video card replacement, the tech showed me it working and I did not detect the loud fan at that point. It was not until I got it home and plugged it in and started it that I noticed it. I just ran activity monitor on the Mac and the top usage was only 1.7%. Could there be another problem than dust? I appreciate any further help! Thanks!

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my fan started running loud lastnight, is anyone else having this problem?

Me too,,,,brand new MacBook Pro. Told to reinstall the op system. Haven't done it yet.

Brand new Mac Pro tower fan suddenly runs full-tilt, CPU is idle

My Quad-Core MacPro tower is two days old. Initially, I was impressed with how quiet it was compared to my older Macbook Pro. Then on day two, for some reason it started running very loudly. It's not just a "little" loud- my wife walked into the room and asked what the noise was.
At first I thought this was just because I was hitting the CPU a bit (importing my iPhone library into iLife '09, and running Eclipse). But I tried powering it off & letting it cool down for a few minutes to no avail; about 10 seconds after powering up, the box gets loud again. I took a look at it with the side cover off, and it seems to be the fan near the top middle, between the power supply and the disk drive.
It can't be a dust issue, as the machine is only 2 days old (and I peeked inside anyway just to be sure- clean). I did do a software update over the past 24 hours or so, but I can't say that it occurred immediately after that. I also did a migration of my old apps and data from my MBPro, for what it's worth.
Why is it suddenly so loud? How can I monitor the fan speed and various system temperatures?
Thanks
EDIT: Activity Monitor shows a virtually idle CPU; there's nothing running that ought to be causing this, as far as I can tell.
Here are my temps: http://imgur.com/J6BLf.png
Message was edited by: armhold

Hi armhold;
Do you see anything using huge amounts of CPU cycles in Activity Monitor?
Allan

Fan is too loud

normally when i start my mbp it is normally quiet. Then one day all of a sudden the fan just got really loud. I dont know what happened or why it is so loud and i only have 2 applications open. SO can someone help me thanks

One day about a week after I got my new MacBook, I shut it down and closed the lid, then noticed the fan was somewhat loud. I'd hardly ever heard the fan before, but I didn't think too much about it. I figured it was just warmer than usual and the fan would run for a bit then shut off. I put it in a bag and a few hours later when I took it out it would not start up. Turned out the battery was run down. I assume the fan had kept on running until it depleted the battery. It's only happened that once, but I'll be paying attention from now on when I shut it down to make sure the fan isn't still running. I guess if I had too, I would just pop the battery out.
Make sure you have installed the latest firmware updates for your Macbook. They update the fan controller.
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Fan randomly running loud + computer not responding

I have been facing a problem for the last several weeks on my PowerMac G5 that technicians have not been able to solve either.
The computer randomly stops responding and the fans start accelerating slowly until they reach their top speed and then stay at that speed for indefinite periods of time. I cannot see any pattern in this - it happens both when the computer is running some process and when it is idle.
Each time this happens, the only option for me is to do a hard powerdown (hold down the power button).
I saw another question about fans running at high speed, but that case, it seemed as if the computer continued to respond.
Any help on this would be appreciated.

I am having the same problem.
Now before you start taking advice to back up all your data, reformat your hard drive, and reinstall all the software; please take note of a few things:
first off, I'm disappointed/frustrated/melancholy that this is happening to me. I spend $5000+ for a "reliable" Apple computer. Then it doesn't want to turn on because its not safe. Sorry if I drown this post with bitter sarcasm but I am coming to the end of the line with my patience.
I called Apple Care, read a bunch of posts (here and elsewhere), and yes I do know about the SMU Reset button (like that really does anything?).
My problem happened a few weeks ago and I thought nothing of it at first. There was a power outage for a quick second and it turned everything off. When I went to turn on my computer, there was no chime, the red light was on, and the fans were running and eventually began running very loud. After letting it run like that in hopes of the screen lighting up, I turned it off by holding the power button. By the way, there's nothing on the screen and the keyboard doesn't work (I use a wireless keyboard, but I plugged in the OG cord keyboard to push whatever series of buttons recommended by these "geniuses") Trust me, the computer doesn't make it to that part of the boot process, so stop with commandoption+PR or F12 to get the CD out. It doesn't work! What's up with this computer! It can handle all these intense calculations,etc. but a power surge is going to shut it down indefinitely.
So I left the computer came back the next day, turned it on and its fine. Cool, I'm happy. It's Working!! I go on a few weeks, then I go to turn it on this Monday, same problem. But actually a worse situation. I had a client come over and the computer wouldn't work. I looked like a idiot. Couldn't do anything cause my computer didn't want to turn on. I do music production/editing. I use my G5 for running ProTools LE. I have other programs but that is the main one I use. There's nothing wrong with it. It's optimized for use with the mac. So those people who are going to advise me to uninstall all my software and all that - I appreciate your concern but don't give advice when you don't know anything!
So I am getting frustrated. My client left a little disappointed, but what can you do? I tried to call AppleCare on Mon. but it was Memorial Day. So I waited for Tues.
Tues morning, my computer turns on like everything is fine.
I'm happy but cautious. I talk to AppleCare rep. He tells me that it is a common problem they have heard about with the G5's. Wherever blackouts, brownouts, spikes, sags, dips, and other electricity inconsistencies occur, the Power Mac G5 has a breaker in it which flips so it doesn't receive uneven power supply and damage internal components.
I like that feature. Good thinking Apple. Protecting my investment from bad electrical grids. But I don't like the fact my computer has a mind of its own where it decides when it wants to boot or when it wants to sit there and run its fans all loud.
I shut down Tues morn to go to work. I come back in the evening, it doesn't want to boot up. Instead of getting angry trying a bunch of times to turn on/turn off the computer, I leave my house all together and go and have a few drinks. I come home ,don't even look at my computer, and go to bed.
I wake up Wed. morning. Go to turn on my computer. Successful boot. It's running. Okay, I think, I'm going to get down to the problem. I read all the logs, not like I know every piece of info, but just to see what's happening. Everything looks fine. I decide to run the AppleCare CD Tech Tool. It says restart holding down C. I do that. When the gray Apple Logo comes up, all this writing about kernals comes up and it tells me to restart or shutdown. I shutdown and attempt to restart, same problem: no chime, red light on, and fans eventually spin loud. Now the CD is stuck in there. I'm going to take it to the Apple Store tomorrow to if these "geniuses" can figure it out.
(Just a side note: Apple calls them geniuses, but its hard for me to think some disconnected college kid with a bad haircut and questionable social skills knows what's up with the power supply issues of a computer; maybe I'm wrong, but you can run your diagnostics and look at the chart of what to do and all that BUT Apple needs to listen to the people)
I am going to get a UPS (uninteruptable power supply) with a clean sine wave output to curb the issue at my end. It's not my fault I live in a area that receives uneven power output. I live in Los Angeles. Summer is starting up and I think its going to be hot, so blackouts, power dips and sags are inevitable. I just don't understand why Apple hasn't considered this problem and fixed it with something:
A recall to change the power supply, Is it something on the logic board?, are they going to reimburse me for lost income (Ha, yeah right)
I really want to know how many people are having this problem?
From what I've heard, it is a common problem.
So I think we need a common solution.
If its so common, it must be the computer. We are all going to live in different areas where the power may vary. Not all of us have the consistent power flow of 1 Infinite Loop in Cupertino, CA. So if it is such a common problem, Apple needs to fix it.
I can't spend more than five grand on a super duper computer and have it wuss out on some power issues.
Its a loss of income and productivity to me.
I can't have that anymore.
Sometimes my computer turns on, sometimes it doesn't.
I bought my PowerMac G5 in April 2006, its been about a month and a half and I'm having these problems.
Thank you for your time.
If anyone else has been having this problem, I feel for you.
It was been very difficult for me not to curse in this post, but I have tried to extend the same respect to all that use these discussion boards to create dialogue, find help, and create solutions.
LETS FIX IT!
Peace,
Swami G
Power Mac G5 Mac OS X (10.4.6) 4.5 Gb RAM
Power Mac G5 Mac OS X (10.4.6) Dual 2.3 GHz / 4.5 Gb RAM
Power Mac G5 Mac OS X (10.4.6) 4.5 Gb RAM

Why has my monitor suddenly begun to have a moiré pattern all over – it is even showing up on my icons on the dock? It appears to be very thin bright green vertical lines. I have a 2008 iMac which is running 10.6.8. What does this mean?

Why has my monitor suddenly begun to have a moiré pattern all over – it is even showing up on my icons on the dock? It appears to be very thin bright green vertical lines. I have a 2007 iMac which is running 10.6.8. What does this mean? I've attached some screen shots below.
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Thanks for your reply LexSchellings, There is no disc in the drive and I went through the suggestions you put forward on the phone with Apple support without any luck. I can put a disc in but it pops straight back out again without registering on finder.
The idea of using an external drive was to enable me to avoid the cost and loss of productivity whilst machine in repair... if I have to take it in to get the old drive removed than I might as well have a new internal drive put in, although I do worry about the reliability of these apple drives given my experience with this one coupled with my limited online research ... on line forums seem to be full of people with the same problem (although perhaps searching such forums is bound to make it seem a common problem as users with perfectly working machines are less likely to post (?)) Your reply suggests that no external drive will work whilst the existing drive is in place.
As a postscript: I do realise that this is a user forum ...my secondary question was asking if anyone knows how to put forward a case/complaint to Apple... I can't find a link on the support page that would enable me to do so and I was wondering if anyone on this user forum had any ideas/experience..

My iMac's fan runs quite loudly.

I only got the computer yesterday from Apple, but it was refurbished. It's an iMac 21" 2.7 1TB.

When you say that the 'fan runs quite loudly' do you mean that the fan is making an unusual noise such as a buzzing or clicking sound, or do you mean that the fans sound like they are running at full speed?
If the fan is making a buzzing or ticking noise then that could indicate that something is touching or rubbing against the fan. If you just purchased the iMac then I would contact Apple to arrange for a replacement.
If the fans sound like they are running too fast then it could simply need an SMC reset. To do this, power down the iMac and then disconnect the power cord for ~15 seconds. After 15 seconds plug in the power cord while making sure you don't press the power button. Here's an article that provides additional information on this condition and why it occurs.
http://support.apple.com/kb/TS1433

Why is my fan suddenly so loud?

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