Intel Mac :: How To Turn On Fans To Keep It From Overheating

Jun 12, 2012

How do I turn on the fans on my iMac to keep it from overheating? I used to be able to turn them on when I plugged in the computer and turned the computer on simultaneously but that stopped working.

iMac (20-inch Late 2006), Mac OS X (10.6.4)

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IMac Intel :: Unable To Turn On System / No Fans Start Up And The Screen Does Nothing

Jan 25, 2007

My parents recently bought an iMac. Yesterday my mom was playing a game when the computer froze. Neither force quit or holding the power button was doing anything so in her frustration she unplugged the system. Today, after plugging in the system again, it won't turn on.

I press the power button on the side of the wireless keyboard and the green light on the keyboard turns on for about 3 sec and then starts flashing. No fans start up and the screen does nothing.

iMac and Macbook Pro
Mac OS X (10.6.3)

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Fans Never Spin Any Faster IMac Overheating?

Mar 30, 2012

I have brought a new iMac 27'' the i5 model. I have noticed that the fans never change speed no matter how hot my processor gets ? Is this normal ? I have ran prime 95 and istat pro to check the temps and fan speeds. Nothing changes apart from the temperature.

iMac, Mac OS X (10.7.3)

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MacBook :: Overheating / Shutting Down - Force Fans To Spin?

Sep 7, 2010

Over the past few weeks my blackbook has been shutting down more and more frequently from what I can only believe is overheating. I just checked my computer upon startup with SMC fan control - it starts up at about 70 C and at about 3500 RPM. Yet, after a few minutes, the fan immediately drops down to 1100 RPM or and fluctuates between 800-1400. I try to force the fans to spin with SMC Fan control, but nothing happens. I've looked all over the web and I can't find anything definitive. I know that macbooks tend to overheat. What can I do? I'm at college and I really need to find a fix for this as soon as possible.

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MacBook :: Overheating And Shutting Down On YouTube - Fans Not Running?

Jul 5, 2012

My Macbook's been overheating and shutting itself down the past two days, usually when on YouTube. Having installed the Fan Control system preference, I can see the fans aren't running at all.My first thought is that they might be broken, but this happened for a little while last year, too, and the fans started working again after a while. Also, it's been miserably hot in my area the past week, and I wonder if that's contributed to it, too (even though the laptop's in an air-conditioned room).Anyway, should I wait and see if the fans begin working again, take it to a repair shop (warranty's expired, so I'm not keen on that), or maybe buy a cooler pad?

MacBook, Mac OS X (10.5.8)

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Power Mac G5 :: Overheating In Idle Mode - Fans Blow Harder

Nov 6, 2007

I have a G5 dual 2gig and in idle mode it seems to a be slightly overheating as my fans start to blow harder and I get my mouse sticking I am running the latest version of Tiger with 3.5gigs of ram I did post in the IDvD, Logic Pro, and the Final cut pro forums the impact of an upgrade of 8gig of ram on my system whether my apps would run better and the system as a whole.

But I have not been able to get any feed back on this that was clear and I was asked to try here on this forum so here I am. I deeply love my G5 and what it can do I am just wondering if it is working at its most optimum I do regularly do my house keeping i.e. repairing permission and occasionally using Tech tool Pro to look over the system but nothing out of the ordinary jumps out. I have a screen shot of my activity monitor and cpu monitor but I do not know how to attach it.

G5 Dual 2 GiG
Mac OS X (10.4.9)
3.5gig of Ram 1530 Gigs of HD storrage/RME Hammerfall Multiface /Canopus 100

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MacBook :: CPU Fans Don't Turn On?

Nov 11, 2009

I have a late 2009 Macbook Unibody that get extremely hot. From using SMCFanControl it tells me it's at 80-90 degrees celcius which to me is extremely hot. The fans also do not kick in at all when it gets at this level. When using skype, it skyrockets over 100 degrees celcius which causes my computer to slow down.

Is anyone else having this issue? Do you think it's a hardware malfunction?

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PowerPC :: PowerBook G4 - Turn The Fans Off?

Sep 30, 2006

I'm trying to record something through the internal mic (and I'm too cheap to go out and buy a proper mic) and I was wondering if there is anyway through Terminal,or an external program, to force the fans to shut off for a certain period of time? I don't want to turn them off to find they can't turn back on and suddenly the computer is 1000�...I just want to keep them off to have a minimal amount of background noise. (And, yes, I'll be running it in a moderate climate so the computer doesn't overheat).

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MacBook :: Overheating And Slowing Down - How To Make Fast And Prevent Overheating

Oct 1, 2009

I have a new macbook, see stats below.

Up till last week everything was fine, I could run 'Second Life', photoshop, email, a browser, download stuff, play Itunes AND watch a movie all at once without any trouble.

But recently the computer has gone a bit weird.

It started getting very hot, much slower and turning itself off.

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Intel Mac :: Mid-2007 Has Crashed Possibly From Overheating?

Apr 12, 2012

Unexpectedly, the screen goes to a 100line b/w vertical display, and stays lit. The rear upper left feels very hot.   After allowing the computer to cool to touch, rebooting presents an apparently stable system.

This has happened twice this week, and never before.

iMac, Mac OS X (10.7.3), 2 gig 2007 version now 4 gig

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Intel Mac :: Mid 2011 Graphics Card Overheating?

Apr 13, 2012

I haven't installed any new software in the last 3 months. About 2 weeks ago the iMac shut down on me out of nowhere. I put my hand on the top-rear and it was really really hot. I left it for an hour and tried to start it up again. A progress bar showed underneith the apple logo at boot up. When  it got to about 15% it shut the computer off again. It did this over and over. I restored from a Time Machine back-up and it worked. I started monitoring the temperatures inside and it seems my graphics card (the AMD Radeon HD 6970M 1024 MB) runs constantly around 80 degrees C. That's hot. I'm not doing anything besides browsing and listening to iTunes so I don't know what could be stressing the GC. Nothing is out of the ordinary in the Activity Monitor. 

iMac, Mac OS X (10.7), i5 3.1 ghz, 1gb AMD 6970m

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Intel Mac :: 27" Gaming On Windows 7 Overheating And Graphic Freeze?

May 27, 2012

When i play battlefield 3 in WINDOWS 7 on my brand new iMac 27" i 7, after some time the computer gets EXTREMLY hot and graphics start to freeze. Im 100% sure its the graphic card/ processor who gets to warm. It sounds like the fans runs on full power to.  (it only happens in windows) 


IMac 27" 3,4 Ghz Intel Core i7
16 GB 1333 MHz DDR3 RAM
AMD Radeon HD 6970M 2048 MB graphics
Windows 7 (full updated)
OSX Lion (full updated)  

My earlier iMac from 2010 gets so hot that the motherboard and graphic card burned off, and apple gave me a new iMac.

iMac, Mac OS X (10.7.2), 8 GB Ram

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MacBook Pro :: Fans Suddenly Making Wierd Noises / Fans Are Hitting Something?

Jul 27, 2009

the other day i wake up and open my macbook pro and immediately heard the fan making noises ive never heard it make before. i checked istat pro. the fans were going at 2000rpm. this is when i started to get concerned since i would never hear the fans at that speed before. the difference was day and night. it sounds like the one or both of the fans are hitting something. i always hear the noise when i start up or wake up from sleep and after a while (30 minutes to an hour) it usually goes away but has come back once without me turning off or putting the computer to sleep. its a refurbished less than a little more than a month ago. im hoping its just some dirt that made it through keyboard and will eventually go away because i dont want to send my machine in to get manhandled by apple repair. has anyone had something like this happen before?

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Intel Mac :: Fans Running At High Speed?

Mar 17, 2012

My iMac (intel core duo) after a hard drive replacement seems to be running the fans at a high rate of speed.  Usually just a few minuets after startup. Before the upgrade they were almost silent and now they are very noticeable. I need to get taken care of or just a result of installing a larget hard drive? 

IMac Intel Core Duo, Mac OS X (10.4.10), Ipod 30 Gig, BMW IPod Integration, .mac

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Intel Mac :: Fans Run Almost Constantly At High Speeds

Mar 20, 2012

The fans on my 3.06 GHz Intel Core i3 imac run almost constantly and at high speeds. I have reset the SMC, fixed permission, and tested the disk. Also, I downloaded SMC Fan Control. Here are my current readings will the fans are blasting:

ODD: 994
HDD: 5577
CPU: 1200
Temp: 44C

iMac, Mac OS X (10.7.3)

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Intel Mac :: Fans Running At Full Speed?

May 18, 2012

Machine: iMac intel core 2  2.66Ghz Model A1224

sn# YM******ZE3 

Ran the hardware test by pressing 'D' key. hardware test came back with error :4SN/1/40000000: T00P-65.250 

I am guessing some sort of temp sensor might need replacing. 


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Intel Mac :: Changed HDD And Now Fans Work ALL The TIME (7,1 - Mid 2007)?

Feb 19, 2012

I have an imac 7,1 - intel core 2 duo, 2,4GHz, that is 20" from mid 2007 with an HARD DISC:  Western digital : WD3200AAJS - (320GB) that I bought a NEW HDD: Western digital: WD10EARX - (1TB): Caviar green series I changed step by step the HDD and reconnected everything and all went well, until I re-started the iMac. After approx. 2-3 min the HDD Fan began to increase in speed and since then I have tried everything that I found on the net and nothing worked to slow down the fans.

That is the external temp sensor is set in the same way as it was on the old HDD.  I reset the SMC  and the PRAM several times, actually oppened and checked all cable conections three times. I installed the SMC fan control - no difference, the HDD fan control demo version - no difference. THUS the problem is that the FANS do not stop working as if the comp is on fire.  

iMac (20-inch Mid 2007)

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Intel Mac :: Fans Run At Full Speed After Computer Turns On

Apr 8, 2012

My Mac OS X as soon as I turn it on the fan is running. I have already gone thru the reset SMC . Could I have too much stuff in it?

Info:iMac, Mac OS X (10.5.8), 2.66 GHz Intel Core 2 Duo 4GB 1067

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Intel Mac :: Fans Running Loudly With Snow Leopard 10.6.8

Jun 23, 2012

My mac just blew out a lot of dust and now the fan is very loud.

iMac, Mac OS X (10.6.8)

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IMac (Intel) :: Installed SSD / Constant Fans / No HDD Temp Sensor

Dec 10, 2014

I've recently installed a Crucial M500 512 GB SSD into my 21.5" 2011 iMac. I've done this to quite a few iMacs, and am well aware that some have a temperature sensor on the factory-installed hard drive. This one, however, did not, and now that the SSD is installed, I'm getting constantly running fans. 

The fans run whether it's booted from the internal SSD, an external FireWire HD, or even if it's sitting in Target Disk Mode or on the Boot Options screen, so I feel like it's hardware-related. 

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Intel Mac :: 24" (mid 2007) Black Boot Screen, Fans Run Normal, HDD Spins, Optical Drive Spins?

Jun 15, 2012

So my girlfriend boss wanted me to fix her computer. So I brought it home turned it on, and it didnt chime but it booted to the gray screen with apple logo/ slashed circle/and folder with a "?" So I made a USB Mac OS x bootable drive (FLASH) held down alt (try using a windows keyboard its fun)  was able to select option and install a fresh copy. all seemed well was running really hot so I poped of the screen. HOLY MOLY! this thing is CAKED with dust, and I am not kidding it has literally piles of dust. So I ran updates, and did firmware updates. Turned it off for the night.  

The next morning I went to radio shack and got Dust remove spray, opened it up made sure I was carful taking off the screen, and blew the sucker out. now its NICE and CLEAN. then i made sure I plugged everything in and turned it on. Drive spun like normal, Optical checked for a CD, and fans are also running normally. but no chime, no nothing stays as silent as normal but doesnt budge, it is like it hangs.  

iMac, Mac OS X (10.7)

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Intel Mac :: It Won't Turn On

Apr 3, 2012

It worked fine last time I used it, shut down properly and now nothing.

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Intel Mac :: It Will Not Turn Off

Apr 22, 2012

When I turn off my mac and the office by a blue screen appears with a stick in the thing running

Info:iMac, Mac OS X (10.6.8)

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Intel Mac :: Will Not Turn On?

Jun 1, 2012

will not turn on


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Intel Mac :: It Can Not Turn On

Jun 2, 2012

I have tried to turn on my mac as normal but it is not turning on at all like it has no power. i have checked all the powerpoints and all is conected.

Info:iMac, iOS 5.1.1, i have ios lion the latest

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Intel Mac :: Turn On And It Would Not Do A Thing?

Apr 1, 2012

I went to turn the iMac on and it would not do a thing. Checked the power and unplugged and repluged it in.

Info:iPad 2, iOS 4.3.2

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Intel Mac :: Turn It Into A FTP Server?

Apr 13, 2012

I just bought a hd camera and i want to use this function: Transferring files to a computer or ftp server. You can wirelessly transfer recordings directly to a mac computer running an ftp server.

Info:imac, Mac OS X (10.6.2)

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Intel Mac :: Why Does It Refuse To Turn On

Apr 20, 2012

My apple computer refuses to turn on when me card reader is connected via the usb . It works ok no problem , it seem ok to me is there a problem with it should i be concerned? 

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Intel Mac :: Fan Won't Turn Off While Computer Is On

Apr 22, 2012

The fan on my imac constantly runs, it has only done this for 2 days now, but if using the mac or if its sleeping the fan wont stop?


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Intel Mac :: New Doesn't Turn On The Next Day?

May 15, 2012

My brand new iMac doesn't turn on on the next day

iMac, Mac OS X (10.7.4)

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