Fan going crazy when booting

When I boot up iMac, the fan goes crazy. After a moment it stops and is quiet again. I unplugged my power and plugged it in again but that does't work. I tried to start AHT by holding D when booting, but that didn't work. I didn't get any discs when I bought my Mac so I can't run AHT using the disc. How can this be fixed?
I also have Windows 7 installed but I don't know if this is relevant. The fan goes mental everytime i boot up. It doesn't matter whether I do that with Windows or OSX.

OS X Mountain Lion- Use Apple Hardware Test
Intel-based Macs- Using Apple Hardware Test

Similar Messages

My fan goes crazy when watching vedio clips?? Why??

Everytime when I watch video clip or movies with RealPlayer, the fan of my Macbook just goes crazy. It sounds like a jet. Is it something wrong with the Macbook or the Realplayer?
Does anybody else have experienced this issue?
How could it be solved??
Thanks

Like this:
1) Click on the blue apple in the top left of your screen.
2) About this Mac
3) Click the "More Info" button
4) When the System Profiler opens, click on Applications. It is in the left pane near the bottom.
5) The right should now contain all the names of your applications in alphabetical order. Look for RealPlayer.
6) Once found, click on it to clearly highlight it.
7) You should see:
Version: 10.1.0
Kind: Universal
If you don't see that, then uninstall RealPlayer and download the correct version from:
http://www.real.com
Read everything VERY carefully. Look for the Intel version of the player.
I just realized that you might be asking how you know if you have the latest system and firmware updates. If that is the question, then:
1) Click on the blue apple in the upper left of your screen.
2) Click "Software Update..."
3) Download 10.4.7 (if you don't have it already)
4) Download Intel Firmware update (again, only if you don't have it already)
5) Reset your machine when prompted by OS X.
That's about I can type right now (my brain is pudding). Post back if this STILL wasn't helpful enough (or at all).

My Imac 's fan goes haywire when screensaver and/ or shutdown takes place

My 14 month old apple Imac's fan goes crazy when the screensaver and /or shutdown takes place.. otherwise it works beautifully and does not normaly make any noise at all.
Thank you..

Hi Gillal,
If your the fans in your iMac fans are running frequently it may be that your computer is overheating for any number of reasons. This article should help you understand how they work -
Learn about the fans in your Mac
If the iMac seems to be using the fans when it should not be, you may want to reset your iMac's System Management Controller. See this article for the steps to do so -
Intel-based Macs: Resetting the System Management Controller (SMC)
Thanks for using Apple Support Communities.
Best,
Brett L

Fans going insane when doing simple tasks and playing WoW?

Hello. I've been playing WoW, starting a new character last week. Until the other day, I could play fine. But starting the other day, the fans would all of a sudden rev up like I've never heard before. My laptop is very powerful, and far surpasses the recommended requirements.
However, when the fan goes crazy, even if I quit the game, and let it stay at my desktop, the fan is still going insane. And I even set all the graphical settings in WoW to the lowest, but it still makes a very loud noise.
And I've owned many laptops with graphic intensive applications running, and the fans never made this sort of noise. Any ideas what may be happening?

I checked my CPU monitor, and my CPU usage is averaging 1-3% at most. And it's been almost half an hour since I quit the WoW application. I even tried restarting. I'm running on the Windows side right now, and my mac side doesn't have any 3rd party drivers or anything installed on it.
On the windows side, I quit processes related to my gaming keyboard and mouse macro programs, since all I do on Windows 7 (in Boot Camp) is play video games. And for the past week I was able to play Mass Effect, without the fan making this noise, and Mass Effect is 10x more demanding than WoW.

Mac Os 10.6.6 update start the fans goes crazy

Hi to all
Some months ago (almost a year from now) my mac start to become hot after only a few minutes it started up and the fan goes crazy but I never realize why. I made some search on the internet but the only answer I found was using some software to reduce fan speed. It didn't work. I run the Hardware test but nothing strange. I also took my macbook to an apple certified repair center but they told me that nothing was wrong. I also ask to another repair center but same thing. So I left my macbook as it was with this super fan noise all the time. A quite disturbing thing but there was no solution and for what I'm doing my machine is ok so why change it? (It was the only solution they gave me)
Last day my hd broke down so I had to replace it. I took my macbook pro a1211 model to an apple repair center they change the hd with a new one.
So I reinstall everything for the beginning. I took my snow leopard dvd formatted the new hd, installed the os, iWork 2008, iLife 2008, Mamp, CSS Edit, Espresso, Pixelmator and few other application such as Firefox, Camino, Etc...
I use the macbook with mac os 10.6, because I had to finish some work, and with my big surprise for two days the machine was super silent no fans, no hot body ..... nothing. I never reboot it and still no fans and hot body wow.
Today I wanted to install the developer kit with ios 4.2 and so I had to update the Mac os x to version 10.6.6 as soon as I made the update after the reboot the fans start again to go like crazy and after 15 minutes of work the macbook body become very hot.
The question is why?
Anyone can help me?
Thanks in advance
Gianfranco

HI R C-R.
The apps i've installed are just a few. Espresso, CSS Edit, MAMP, TextWrangler,Firefox, Camino, Chrome, Opera,BetterZip, Stuffit Expander, Pixelmator, 1Password, Dropbox, Xslimmer, VLC, CyberDuck, littlesnitch, iworks, iLife, wacom tablet driver.
Nothing more. All the software is updated.
Here the data but as you can see nothing strange but fans are on at the maximum speed!
PIDProcess Name % CPU Threads Real Mem Kind Sudden Term.
## Firefox 2,1 15 106,3 MB Intel
## Activity Monitor 1,2 2 20,0 MB Intel (64 Yes
## activitymonitord 0,9 1 1,3 MB Intel (64 No
0 kernel_task 0,9 57 138,0 MB Intel
## Finder 0,3 9 36,1 MB Intel (64 Yes
81 WindowServer 0,2 5 53,4 MB Intel (64 No
## Dock 0,1 3 15,5 MB Intel (64 No
## Little Snitch Network Mo 0,1 4 4,4 MB Intel No
14 configd 0,1 7 3,3 MB Intel (64 Yes
1 launchd 0 3 1,1 MB Intel (64 bit)
## SystemUIServer 0 3 19,5 MB Intel (64 Yes
## Apple80211Agent 0 3 9,5 MB Intel (64 No
## Safari 0 12 236,2 MB Intel (64 No
16 distnoted 0 3 1,3 MB Intel (64 Yes
11 DirectoryService 0 6 4,7 MB Intel (64 No
## launchd 0 2 1.000 KB Intel (64 No
13 diskarbitrationd 0 3 1,4 MB Intel (64 No
44 mds 0 5 31,4 MB Intel (64 No
17 blued 0 3 4,7 MB Intel (64 Yes
10 kextd 0 3 2,5 MB Intel (64 No
22 securityd 0 2 3,0 MB Intel (64 No
33 ntpd 0 1 1,1 MB Intel (64 Yes
34 cupsd 0 3 2,9 MB Intel (64 Yes
19 mDNSResponder 0 3 2,2 MB Intel (64 No
35 httpd 0 1 3,9 MB Intel (64 No
## UserEventAgent 0 3 5,6 MB Intel (64 Yes
62 coreservicesd 0 4 18,8 MB Intel (64 Yes
60 lsd 0 3 3,8 MB Intel No
## TextEdit 0 2 12,0 MB Intel (64 No
57 autofsd 0 2 940 KB Intel (64 Yes
## pboard 0 1 832 KB Intel (64 Yes
## fontd 0 2 6,4 MB Intel (64 Yes
51 dynamic_pager 0 1 788 KB Intel (64 Yes
49 fseventsd 0 13 1,9 MB Intel (64 No
48 hidd 0 2 948 KB Intel (64 Yes
46 KernelEventAgent 0 3 988 KB Intel (64 Yes
45 loginwindow 0 2 8,2 MB Intel (64 No
42 RFBRegisterMDNS 0 2 1,7 MB Intel (64 Yes
## mdworker 0 3 11,2 MB Intel (64 No
## TextWrangler 0 3 27,9 MB Intel No
38 usbmuxd 0 3 1,6 MB Intel (64 Yes
36 krb5kdc 0 2 1,9 MB Intel (64 Yes
## Preferenze di Sistema 0 2 25,7 MB Intel (64 Yes
97 coreaudiod 0 3 3,2 MB Intel (64 No
## WebKitPluginAgent 0 2 992 KB Intel (64 Yes
## mdworker 0 4 3,1 MB Intel (64 No
## TabletDriver 0 2 4,4 MB Intel (64 No
## ConsumerTouchDriver 0 2 5,5 MB Intel (64 No
84 cvmsServ 0 1 856 KB Intel (64 Yes
## iTunesHelper 0 3 2,8 MB Intel (64 Yes
83 httpd 0 1 620 KB Intel (64 bit)
## AppleSpell.service 0 2 7,0 MB Intel (64 Yes
15 syslogd 0 4 684 KB Intel (64 No
## 1PasswordAgent 0 2 9,3 MB Intel (64 No
12 notifyd 0 2 596 KB Intel (64 Yes
## Little Snitch UIAgent 0 3 5,9 MB Intel No
## Quick Look Helper 0 6 8,6 MB Intel (64 Yes
## PenTabletDriver 0 3 9,3 MB Intel (64 No
## Agente base AirPort 0 3 5,5 MB Intel (64 Yes
## AppleVNCServer 0 4 3,7 MB Intel (64 Yes

My touch screen goes crazy when rain drops fall on it

When I operate my phone in rain my touchscreen responds to the rain drops. My touchscreen responds crazy when raindrops fall on it.

There are other threads concerning this, for example:
http://talk.sonymobile.com/t5/Xperia-Z2/My-touch-screen-goes-crazy-when-rain-drops-fall-on-it/m-p/1015357#M30776

My iphone screen goes crazy when it charges

Hey there,
Whenever I charge my iPhone my screen goes crazy when I touch it. If i'm typing whilst its charging it clicks random things and deleted what i've typed. The phone works completely fine when its not charging and I haven't had any other problems with it. I have the iPhone 5c iOS 7.1.1 (about to update after this post).
If anyone could help me that would be great!
Ps. Someone posted a video and my phone does the same
https://www.youtube.com/watch?v=QbsNCjbs-xg

I have the same exact problem and I use an Apple charger and lightning wire cord. Resetting the phone doesn't work and neither does shutting it off and turning it back on. It is infuriating to say the least, especially because this stupid phone spends more time on the charger than off. The battery is crap.

Creative Zen 16gb goes crazy when FULL volume - 25 (with UE 5 P

I dunno if anyone in here have this problem!!! My zen goes crazy when i pump up the volume FULL. It has problem with MP3, AAC (Nero AAC) works fine. My mp3s are all LAME 3.97 vbr V0. And its surprising, when i use custom EQ setting even the MP3 works fine with FULL volume but once I change it to preset ROCK or anything else the sound goes cracking. My UE 5 pro's sound goes ON and OFF and the CRACKING sound is killing me. BTW I am using latest firmware version
(Creative ZEN Firmware .2.0). Any Idea! Thanks in Adv.

Just want to comment on the sound quality. With my player it's the opposite direction; sounds for videos are not as good as with my mp3 and wma files, but it's nowhere near bad either. With my set of Koss PortaPro the?sound is outstanding with the music.

Fans going crazy, airport doesnt work and nor does iSight

Hi
I have a 13 inch Macbook Pro, late 2010 model, 2.4 ghz, 4gb ram, so on, so forth
Just had the Logic board done as it died (intermittantly, then completely), and now the fans go crazy at most opportunities, sometimes Airport doesnt fire up (cures with a restart) and iSight doesnt work at all. It goes really slowly when the fans are going nuts. This is only using Chrome..
Any ideas? I'm falling out of love with this computer.

You have a real problem to deal with. I would recommend you download a utility like Snow Leopard Cache Cleaner and clear all user, system, and font caches. Then the following:
Boot from your Snow Leopard Installer disc. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities menu. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the installer. If you Quit the installer at this point the computer will restart.
If DU reports errors it cannot fix, then you will need Disk Warrior and/or Tech Tool Pro to repair the drive. If you don't have either of them or if neither of them can fix the drive, then you will need to reformat the drive and reinstall OS X.
Let's see if that helps you out.

MBP Fans going crazy!!! HELP!!

I am going to give you all the WHOLE story!
(grab pop corn)
four weeks ago I came home and heard a loud "roaring" noise from my room. When I got in there I noticed it was my MBP's fans. They are spinning at full speed. Well the MBP was on but nothing would come on the screen. I took out the battery and tried again and AS SOON as I touched the power button the fans would already be at full blast but nothing would come on the screen.
I pretty much figured the logic board went out on this thing, so I took it to get repaired. Well the total price on the repair is...$1,735.79. I just got it back today and AS SOON as you press the power button THE FANS ARE SUCKING SMALL BIRDS FROM THE SKY! but this time the screen comes on and I am able to work for about 30 minutes then the battery is completly dead.
I got iStat pro and and a couple of other Fan/heat monitoring devices, and it will NOT show the fans...Pretty much it says
Fan 1: 0RPM
Fan 2: 0RPM
Now keep in mind this happens as soon as I power it on. I can boot into windows and I still get the same problem.
Also another anoying thing, my date and time is suppose to sync up with Apple..for some reason im stuck in January 3rd 2001!!!
Someone please help me out on here I am going crazy.

Have you been back to wherever you had the repair done? Clearly something is very wrong here. Whoever did the repair should have tested your Mac and made sure it was working properly before giving it back to you. I assume that you mentioned the fans going all out as a problem? Obviously this very expensive repair did not fix the problem.
There should be some sort of warranty on the work that was done. Both on the labor and on the replacement logic board itself.
The error code you got on the right fan may indicate that it is beginning to fail. If they keep running like this, they will both fail.
I have no idea why iStatPro should indicate 0 RPM when the fans must be running at 6000 RPM. It's almost as if it is reporting the exact opposite of what is really happening. I wonder if it is possible to plug the fans in incorrectly?
Good luck!

Regarding Safari; (screen goes crazy when I press the Top Sites bottom)

Regarding Safari; When I open safari everything works fine, but when I press the top sites bottom, the screen goes crazy for a second and then goes to the top sites. It is not fading or dimming from one screen to the other like it use to do. any sugestions. Thanks

Nope, it isn't normal, but I don't know the cause. You might have better luck posting in the Safari forum:
https://discussions.apple.com/community/mac_os/safari

Fan going crazy every time we run anything - system very slow. Connected?

System has slowed down dramatically of late. Now fan is going crazy. Are they connected? Any way to speed things up ?

You should be comparing it to the size of your hard drive. Look in About this Mac>more info>serial ATA which will give you the drive size. If it's the original, it probably is 160GB, so you have more than enough space.
Have you emptied the caches and reset the SMU? And vacuumed the air vents?
You have amazingly little memory. I would add at least 1GB, which you can find at [macsales.com] or [smalldog.com] or [newegg,com]. Make sure that whatever you buy has a lifetime guarantee. I suspect once you add more memory, your troubles will be over.

Neo4 board: alarm going off when booting up, for no obvious reason?

Hi,
I have a Neo4 Platinum with a AMD 3200+ / 1024 MB TwinMOS / ATI X800XL.
When booting up from cold, the Neo4 starts to beep. (comes out of the "MSI CoreCell" I think, the standard beeper is detached)
The alarm stops suddenly when the WinXP loading screen appears.
Everything is working fine, no malfunctions whatsoever. I would just like to stop my PC from waking up all of my house whenever my Neo4 boots up.
Any suggestions?
Thanks!

Thanks for the replies so far.
I took a look at the PC Health overview in my BIOS, and it states the following:
System Temp = 42°C
CPU Temp = 48°C
System Fan Speed = 0 rpm
CPU Fan Speed = 1622 rpm
Northbridge Fan Speed = 7850 rpm
CPU VCore = 1.42
+3.3V = 3.34
+12V = 11.97
+5V = 5.10
Nothing dramatical there I think..?
There is no value flashing, and no obvious culprit as you suggested, bassmadrigal.
SAB, where can I change the "low rpm" settings for my CPU fan? I am not sure if I can adjust the speed of my CPU fan, but I will take a look.
Anyways, is there no way to simply shut off that annoying alarm? Everything seems OK, there should be no need for screwing with everyone's nerves in this household

My ipod touch 5g goes crazy when i plug it up and i use the apple cord that it can with

When I plug my ipod touch 5g up to charge and I get on there to play games but when I do, it goes crazy! The screen wont work and I keep on tapping at it and then the screen finally works but only for about 2 mins.

Try a different cable and a different charging source.
Other users have reported the same but never posted back when how it was resolved.

Powerbook fan going crazy

Ever since installing Leopard, my Powerbook G4 (1.67 Ghz) will start going crazy with few or no apps running at all. Activity Monitor doesn't show any errant behavior, but the fans act like I have a gagillion apps open.

who knows, there may be some process that starts to ramp up the fans and then quits. I installed the latest beta of OnyX with 10.5 compatibility and within seconds of it completing my MacBook fan started to rev. What I did notice, albeit very briefly, was a process called installdb (and user '_installer') running with close to 80% of CPU.

Fan going crazy when booting

Similar Messages

Maybe you are looking for