MacBook Air :: High Pitched Whining Noises Coming From CPU?

Feb 1, 2009

I have a 1.86ghz 128GB SSD Rev B Macbook Air. The first one I had made a high pitch whining noise when the processor was idling or under light load. It was a very very high frequency noise, and you could only really hear it when the room was totally quiet - or unless you put your head near the top left side of the keyboard (where the CPU is located). A bit of googling and it seemed that older Macbook Pros also seemed to have had this exact problem.

I took it to the Apple Store and a Genius there took it back and said he could hear it as well. He offered to go through the repair process but since that would have taken awhile, I got an exchange instead from where I bought it from. Unfortunately, this new MBA also makes the same noise but to a slightly lesser degree (though it's possible that the frequency range isn't as high so it's not as piercing... hard to tell though).

Since this is my second RevB Macbook Air with the problem. I realize most people have lower noise sensitivity than me, so you might not notice it unless you place your ear to the top left of the keyboard. (And just to be clear, this is not a fan noise or a noise from the SSD - which don't make noises anyways. I am 100% sure this high pitched noise is coming from the CPU or somewhere on the logic board.)

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OS X :: Strange Noises Coming From System / High Pitched Noise Near The Keyboard

Mar 27, 2009

I have a Macbrook Pro, one generation old. In the past week, it started making a high pitched noise from the upper left hand corner, near the keyboard. When I pick the computer up and change the angle, I can eliminate the noise.

Just in the past day I noticed that in addition to this high pitched noise, periodically a much louder, different noise comes from the same area, which again, if I move the computer around, I can minimize the noise.

My guess is that there is something loose in the computer, maybe a fan? Should I bring it to apple? My computer has been running pretty slow lately, could this have anything to do with it?

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MacBook :: Left Fan Giving High-pitched Whine / Noise Coming When Computer Is Running Off Battery

Dec 26, 2010

This is my first post, and I apologize as it's a little long. I just wanted to get the whole story on the table and clarified.I've had one of the new Aluminum 13" MacBooks (2.0GHz C2D) since Christmas Eve. A few weeks ago, it accidentally fell off my desk at work (not a far drop , but far enough for my heart to stop for a few minutes) when I got tripped up in the power cord under the desk.

For all intents and purposes, the MacBok seemed to work fine. I had one of our IT staff, who happened to be a trained Apple repair tech, take a look at it; the only real damage was that the display hinge had been knocked a little out of alignment. Just ot be on the safe side, I took the machine to the Apple Store, where they told me not to worry about attempting to get the hinge fixed (because I'd be paying a lot of money for such minor work), and the Genius sold me a hardcover plastic Speck case for the MacBook.

While the Speck case certainly looked nice and madethe already sturdy laptop feel sturdier and "protected", I was a little concerned about the amount of heat the machine was giving off within the case. On Sunday, I unplugged the machine from the MagSafe charger for a few hours and left it closed in sleep mode. When I woke it back up, the fan on the left continually gave off some sort of high-pitched whine whenever the computer was in idle mode.

I Googled, searching this site and others, and read about the "CPU whine" in the previous generation MacBooks and MacBook Pros. I also saw where a few people with new Aluminum MacBooks were having this same issue or something similar:


It seems to only make the noise when the computer is running off of the battery - plugging in the MagSafe charger makes the noise quiet 85% of the time (I've found that plugging, unplugging, and replugging will not stop the whine from occurring).

I tried installing QuietMBP as was recommended in some posts, but the only setting that will stop the computer from whining is the "highest" setting (that is, allowing the processor 0 seconds of idle time), which causes QuietMBP to eat up 30% of my processor usage in Activity Monitor and to start the fans going (and, presumably, to significantly lower my battery life).

I don't know whether all of this was the result of the MacBook falling, from it overheating in the case, or something that "just happened". I set up an appointment with the Genius bar for today at 4 PM, but Idiscovered another odd occurance when I set up a new account for the Apple Store (rather than give them my password)

The noise never happened under the new account. Never. I left the machine idle until any and all initial processes were done. No noise. I checked Activity Monitor for stray processes. None. And no noise.

Now I'm bewildered. Could something have gone wrong somewhere in my account, leading to a corruption of a power management utility or process? I'm not canceling my appointment, but I am going to try a few things before I leave. I've already repaired disk permissions, and I'm about ot reinstall the 10.5.6 OS X combo update. Should I try to reset the PRAM too? What other options should I be looking at?

Or should I just wait, and let the Genius Bar folks look into it? As a note, I'm aware I may have to pay for any repairs because they may or may not blame them on the MacBook having dropped (despite two to three weeks passing between the fall and this issue arising), and I'm okay with paying for reapirs (though I will try my best to argue my case, of course).

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OS X :: Horrible High Pitched Sound Coming From My IMac 27"?

Aug 17, 2010

If you're having this problem, try adjusting your brightness. I was experiencing this issue today, and depending on where my brightness slider was... it got worse, better, to non-existant.

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MacBook :: High Pitched Sound When MBA Connected To TV And Hi-Fi?

Mar 2, 2010

When I connect to an HD TV using the Mini DisplayPort (via a Monoprice Mini DP-DVI dongle and a Monoprice DVI-HDMI cable) and to a Hi-Fi system using the headphone out, the Hi-Fi speakers emit a loud and persistent high-pitched whine.The whine disappears when I disconnect the Mini DP dongle, and also when I disconnect the audio cable so that the sound is playing through the internal speakers. There's no whine when I connect earphones to the MBA instead of the Hi-Fi. I don't have another external display with which to test the issue, so I'm not sure if this sound exists when the computer's connected to, say, an ACD.I'm surprised that this problem doesn't seem to have been mentioned on this board, but it's well documented on the Apple boards (1, 2, 3, 4). The consensus over there is that it's a fundamental design flaw in the MBA and that the only solution is to get a ground loop isolator. Has anyone here had the problem and been successful in getting it fixed by Apple?

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MacBook Pro :: High Pitched Noise When The Fans Are Running Around 6.2k RPM

Jul 1, 2009

It's the 2008 model MacBook Pro with the 9600m gt 512 card.

So, I just noticed that when I have my MacBook Pro in High Performance mode it emits an high pitched noise when the fans are running around 6.2k RPM and the CPU and GPU is around 63c. The noise follows the speed of fans, and at idle the noise is gone.

I have uploaded a video of it on youtube here:

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MacBook Pro :: Odd High Pitched Noise Like Mosquito Ringtones

Nov 20, 2009

My 13" Macbook Pro has started making an odd, high-pitched noise, kinda like one of those 'mosquito' ringtones. It's pretty quiet so I can only hear it at night when the computer is beside my bed on the nightstand. However it's odd in that, it's always present UNLESS I scroll in Firefox. As long as I'm scrolling in Firefox, the sound stops. It seems to be coming from the left side of the computer.

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MacBook Pro :: High Pitched Whine And Freeze Ups From Mid-2009?

May 1, 2012

I've heard of people having issues with high pitched whining coming from the left-side of the keyboard due to the backlight inverter. There isnt much that can be done about it from what i've seen. My issue is slightly different, as I get the high pitched whine nearly at all times, and it changes dependent on the angle of the screen and level of backlight brightness.The biggest problem is that at certain points where the whining is happening, everything on-screen will freeze until Ive messed with the screen angle and played with the backlight buttons, then as soon as i've done that, it almost 'snaps out of it' and things on screen start happening again.

Mac OS X (10.7.3)

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MacBook Pro :: Random High Pitched Chirps Emanating From Keyboard

Nov 30, 2009

I've been getting these high-pitched chirps (beeps? cheeps?) emanating from the upper left quadrant of the keyboard. They seem to happen when I'm doing some heavy photo processing or such. They're not the chirps that have been reported with some MB and MBP on booting up. I've had them now for months, and while I don't think they've got much worse, they've not gone away. I can't seem to make them happen, either.

I've called in to Apple (Applecare runs out in two weeks) to get a case started and will be taking it in to a genius bar to have them run a hardware test. I just wanted to do some due diligence and check in this forum to see if others know about this and what it might be. My suspicion is that it's a logic board issue (though I think this may be something I'd read when it first came up and I was checking on it then). The sound is very electronic, not mechanical, and it has two or three parts to the sound (not one pure beep); it is short, but sometimes happens several times over a few minutes' time.

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MacBook :: High Pitched Whine In Boot Camp XP Affected By Brightness?

Nov 1, 2008

I know this happened before in the old Macbook Pros by the look of things when I searched around.Basically there is a noticeable high pitched whine when the screen brightness is either not completely off or max.

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MacBook :: Strange Noises After Installing Updates / Noise Coming From Fan?

Dec 21, 2010

I recently purchased a gently used MacBook. Running 10.5.8. The computer sounded and operating perfectly until I made the following software updates:

MAC OS X Update Combined
Security Update 2010-007
Remote Desktop Client Update
Airport Base Station Update
iLife Support
Java for Mac OS X 10.5 Update 5
Java for Mac OS X 10.5 Update 8
Airport Utility

Now I have an annoying hum noise, that could possibly be the fan.I have run Disk Utility, but the annoying hum noise remains. Does anyone have any suggestions before taking this by an Apple Store.This was intended as a Christmas gift for my wife. Can anyone spare me the embarassment?

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Mac Pro :: Pitched Noise Coming From System / Connected To External Audio Interface?

Jan 6, 2011

just got happy about the fix for the audio / performance problem of the 09 mac pro's. Why should it be different, the next problem knocks at my door, hallelujah...

When I connect my external audio interface (apogee ensemble) to my mac pro, the mac begins to whistle...

As soon as I turn off my interface again, the whistle is away immediately . The sound is definitively coming from my mac pro and I couldn't locate the problem to a fan. I think it's maybe the firewire controller chip? When I connect my external lacie HD I have no problems at all. I have tried it on both ports on the back side with no success.

The whistle is not constantly on the same noise level. Sometimes it's away for a few seconds, it's high pitched and really annoying though. It does not matter if I playback audio or not. Nothing worked though. I experienced the whistle in the past few months sometimes but it was mostly just for a few minutes or so. But in the past few days it was constantly and it never really stopped. This drives me crazy when I have no audio playing and my room is silent !!

I have no other firewire cable (400 to 800) around to test it. Could this be the culprit also?

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OS X :: High Pitched Noise Through IMac's Internal Mic - How To Fix It

Oct 22, 2007

iMac CD 1.8 here. W/e using my iMacs internal Mic I get a really high pitched noise on the recording. I'm assuming its from the computer. Is it normal or should I get it fixed?

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PowerPC :: G5 IMac / High Pitched Whine?

Dec 13, 2008

I have a 1.8ghz G5 iMac with ambient light sensor. When it is on there is a noticeable high pitched whine that is quite loud. It gets even louder if the fan runs more.

If I replaced the fan would this solve the problem or could it be the power supply?

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IMac :: Screen Making High Pitched Noise

Oct 24, 2009

I just bought and received a new 21.5'' iMac and love it but the screen is making a high pitched noise, similar to a dog whistle. It's that sound that isn't loud but pierces through your brain. And the brighter the backlight is, the louder is gets. I love this machine but I don't think it should be doing this and it bothers the heck out of me. I called Apple and all they said was to bring it to the Genius Bar.

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Hardware :: G3 Has Loud Whine / Constant And High Pitched

Apr 7, 2009

I have been presented with an iMac G3 400Mhz. It has an annoying loud whine. The whine is constant and high pitched. I am thinking exhaust fan. Is my thinking correct? Is it hard to get to and replace?

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MacBook :: Nivida Whitebook Making Crackling Noises / Noise Coming From Center Of Notebook

May 10, 2009

when I was browsing the BBC website . I happened upon the front page and could hear a crackling sound, eventually after looking round the room for about 5 minutes I realized it was the macbook.

When the news page 'scroller' at the top types its news story out in a tika tape kinda way that is when the crackling noise happens .

does this make sense ? is my macbook faulty ? ..does it take soo much power to perform this function as to make my macbookCPU crackle ?

the noise is coming from approx the center of the notebook and is quiet(ish) but audible enough

anyone have any ideas ?

link to the site is below , you'll see the words scrolling across the screen at the top which then creates a clickable link to a news story : URL

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OS X :: IMac G5 Speakers Don't Seem To Be Able To Handle High Pitched Sound In A Movie?

May 20, 2010

I have a 24" aluminum iMac G5. I have never had a problem with sound before, and feel like this problem is isolated to a certain DVD but the DVD works on EVERY other player I own. Everything pretty much plays DVDs, so that's many!

So here's my problem: There's parts of this movie that have very high pitched sounds, like electronic sounds that are just sound effects in the movie. Whenever I get to those parts in this movie (maybe even other movies for all I know, I don't play many) and the sound goes quiet, like the speakers can't handle that high pitched sound.

I feel there must be something I can do about it, right? I just use the regular default DVD player application that pops up when I put a DVD in. I tried playing with that equalizer but nothing changed.

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IMac :: High Pitched Noise Heard On Adjusting Brightness

Jul 29, 2010

Just got my new i7 in the mail today after waiting for the refresh for 5 months and it has that stupid high pitched noise that you get when you adjust the brightness. I returned four of these things at the beginning of the year (2 HD failures, 1 power source failure, 1 DOA), one that had the hd failure also had this same high pitched noise.

I love these computers (minus the complete lack of quality control), so I don't want to switch back to PC, but I am at my wits end here. Apple already gave me $150 off this computer for me trouble, but I just don't know if its worth the hassle anymore. I am returning it for sure, but would you ask for more compensation, maybe a ram upgrade or something? I don't like to be the guy who asks for free crap, but the way I see it, they can give me another hundred $, or I can go back to pc and they lose a customer for life.

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OS X :: Strange Noises Coming From System / No Idea From Where?

Oct 25, 2009

I have just discovered that there are strange noises from my 21.5" iMac (1TB, ATI 4670).I have no idea where do the noises come from (maybe harddrive?)

Can anyone can tell me?

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MacBook Pro :: 13 Superdrive Destroys Cds/dvds Makes Funny Noises And High Pitches Sreaches?

Apr 29, 2012

my macbook pro superdrive destroys cds/dvds makes funny noises and high pitches sreaches, the sd slots stopped working and apple care in maintenance mode,anyone got any ideas or are they covered under warrenty ?? Software  Mac OS X Lion 10.7.3 (11D50)Processor  2.26 GHz Intel Core 2 Duomid 2009

MacBook Pro (13-inch Mid 2009), Mac OS X (10.7.3)

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IMac :: High-pitched Frequency With External Speakers / Connected Via Firewire Audio Interface

Apr 14, 2004

I hope I'm not double posting. Have any of the other new iMac owners experienced weird frequencies coming from external speakers that are connected to their iMacs?

For example: I have a set of studio monitors that are hooked up to my iMac using a firewire audio interface. Whenever I'm copying data I get an extremely high-pitched frequency coming from my speakers that sounds like my hard drive spinning. Also, whenever I'm scrolling or moving the magic mouse I get a loud buzzing coming from the speakers (especially when scrolling). None of this stuff happened with my previous 20" iMac C2D. I have experienced this issue with all three of the 27" iMacs that I have gone through thus far (due to the yellow tint issue). Does this sound like something I'm just going to have to live with. All of these high pitched frequencies are driving me batty!

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PowerPC :: IBook Making Funky Noises / Mechanical Sound Coming From CD-Rom

Feb 28, 2007

but anytime someone pounds on the table and I have my 12' iBook just chilling on it, it makes a resetting noise, a very mechanical sound that makes it seem like it's resetting itself once. I have no idea why, and I just beg people around me to regulate their anger.

However, even when I am picking up my iBook it'll make the noise.Is this a sign of a deteorating cd-rom drive? Or are most iBooks and Apple laptops like this?

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PowerPC :: Squeaking Or Scratching Noises / Noise Coming While Processor Works

Nov 2, 2007

I have a PowerBook G4 15" Laptop and it's recently started making a buzzing noise. It drives me crazy! The noise seems to come from the processor and happens whenever I'm scrolling through web pages, hovering over my dock, launching applications or pretty much whenever the computer is doing anything.

I've googled the issue and found it to be quite common, even being some posts on this forum. Here's the best info I've found so far:

"The squeaking is actually the processor going into Nap mode, and has been noticed on a number of G4 and G5 models. To save power when the processor has a little bit of idle time, it essentially turns itself off. What is happening when it's squeaking like this is it is alternating very rapidly between going in and out of Napping as the processor waits for more things to do. I've noticed that it happens most often during an active SSL connection; an https:// connection, Software Update, checking E-mail on a secure server, or any other secure connections can make this squeaking noise. There are many other ways to produce it too, such as scrolling through a web page or some other more graphic-intensive process.

If you want to check and/or get rid of it, you can download the CHUD tools (part of Apple's Developer Tools, and also available separately). The Processor preference pane (formerly called Hardware) will let you disable Napping, after which point the squeaking should go away. The squeaking also goes away if you reduce processor speed by turning Energy Saver processor performance down to Reduced. However, I'd recommend that you leave Napping enabled (to reduce heat output and increase battery life), so leave it in the default state."

I've downloaded the CHUD tools program and turned off Nap mode, I think. But it still makes the noises! I cannot figure out how to reduce processor speed. So frustrating. Anyone have any advice?

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Mac Mini :: High Pitched "silent" Noise At Idle?

Jun 2, 2010

I'm getting this softly high pitched sound at idle. I did not have this sound before until this month. I bought this thing in January 2010, yes this year. Does anyone know what could be going on? It does not make that sound when I'm using it, it's only at idle. I can even hear it when I'm lying in bed since this is in my room. Check out my signature to see what I have.

It sounds like a idle fan issue? The computer works fine, but it's just that high pitched noise that bothers me. I should take it to the apple store huh?

I decided to keep my current set up and use my mac mini as a desktop that mostly works as a media server like set up that holds my media for my apple TV if I run out of space on the ATV and later use it as a home theater computer when i get another HDTV. this is just fyi on why I have my mbp and mac mini still yet instead of having only one computer...

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Windows On Mac :: High Pitched Noise When Starting Bootcamp Windows

Sep 1, 2010

after i get to the windows loading screen my mac just throws out a consistent high pitched sound and shows a black screen, i can only get into bootcamp windows when i unplug the computer and start it up with the running windows normally option. is this a virus?

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OS X :: Speakers Unable To Handle High Pitched Sound / Sound Gets Quite

May 1, 2008

I have a 24" aluminum iMac G5. I have never had a problem with sound before, and feel like this problem is isolated to a certain DVD but the DVD works on EVERY other player I own. Everything pretty much plays DVDs, so that's many!

So here's my problem: There's parts of this movie that have very high pitched sounds, like electronic sounds that are just sound effects in the movie. Whenever I get to those parts in this movie (maybe even other movies for all I know, I don't play many) and the sound goes quiet, like the speakers can't handle that high pitched sound.

I feel there must be something I can do about it, right? I just use the regular default DVD player application that pops up when I put a DVD in. I tried playing with that equalizer but nothing changed. Any ideas...?

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Mac Pro :: High-pitch Noise Coming From External Speakers When Play A File

Apr 2, 2012

I just bought a pair of the Rokit 5 external speakers. When I plug them into a Mac Pro (Tower) I get a high-pitched hum from the speakers each time I try to play a sound. So if I go into System Preferences/Audio, and I try to play a sound, the high-pitch is heard as the sound plays, and for a second or two after, then it goes away, and is heard again each time I try to play a sound. Same with when I play something thru iTunes or any of my audio apps. 

If  do the exact same thing playing from a Macbook, I do not have that problem at all, the sound is nice and clear with no high-pitch sound. 

I have the speakers plugged in using 1/4 inch jacks to an external sound card (MBox), and this audio card is plugged USB into the Mac. 

Mac Pro, Mac OS X (10.6.8)

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Software :: Sound Not Coming Properly / Sound Changes Automatically From Normal To High

Feb 9, 2009

I just bought an iMac 24" 2.8Ghz Dual Core, 2Gb RAM, 320 HDD. This nice iMac has been with me only 2 days and the problems already started. I don't know why when I play a song either in iTunes or in web(audio streaming) the audio suddenly changes. It's as if you applied an EQ and removed all the low frecuencies and after a few seconds the sounds returned just as normal. When this "auto EQ" happens, the sound becomes "brighter" (I hope you understand what I am trying to say) but just as I said, after a few seconds, the sound is played normaly. I am running Mac OS X v 10.5.2.

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MacBook Pro :: 2.16 HD Whining / After Secure Empty Trash

Feb 8, 2010

I went to empty trash (secure empty trash more specifically) and a few minutes into the process, the hard drive revved WAY WAY up and is whining horribly. Time for a new hard drive or is there anything I can do? Also getting the beach ball with almost everything I do now.

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