Black Screen...loud fan noise

While online today, the power in our house went out. When the power came back on, I re-started my Mac. Black Screen and loud fan noise. I have turned my Mac off and on about 10 times. I've also unplugged. Still black screen and fan noise. Any suggestions?

rad_thundercat wrote:
I'm having this exact same issue.
I moved my iMac to another room, plugged it in and turned it on. Black screen and racing fans. No beeps. I've tried all the PRAM and SMC resets, still nothing.
Not the exact same issue. Please create your own thread. However please do the SMC reset at least 3x back to back. It is also possible you are not doing it correctly, please follow the directions in:https://discussions.apple.com/docs/DOC-3603

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Black Screen Saver & Fan Noises

My computer just yesterday started making loud fan noises. I've done some research on the computer and it seems to be quite a common problem with iMac, however, I have been unable to find solutions. It started after I watched a DVD on my computer and had to change the sleep and screen saver settings (or at least that's the trend I noticed). After the movie was over I shut down my computer and when I restarted it the next day, boom, loud fan. I was wondering if it had anything to do with the screen saver settings because that's all I could think of. Before, I had the black blank screen saver and now I can't find it on my computer. I don't want a screen saver with pictures, just the blank one--what it did before going to sleep. I've restored the energy saving settings.
Any ideas? I thought the DVD issues was related perhaps.
The fan (or what ever it is) noise is driving me crazy! As soon as the computer goes to sleep, the fan noise stops.

Yeah, I think that is this one...
http://eshop.macsales.com/Descriptions/specs/Framework.cfm?page=imaclate07.html
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.
Also, under the Apple icon at top left>About this Mac>More info...>Hardware>Serial-ATA, does it say "S.M.A.R.T. status: Verified"?

Black screen, loud beeping noises

Posted: Jan 21, 2008 11:57 AM
Reply
I have a month old iMac 20". In the midst of working today the screen went black, loud beeping noises every 10 seconds. Will not turn on. i am panicked, please help.I have never had this problem with any other Apple computer. Help!!!

Hello and Welcome to Apple Discussions.
And in the words of the late famous Mac user Douglas Adams: "Don't Panic".
It's clear this is not normal and I've not come across it before. You should book the fault to AppleCare right away:
http://www.apple.com/support/contact/phone_contacts.html
Do let us know how you get on.
mrtotes

Mac Pro 3.1 black screen, loud fans

Hello community,
I have a Mac Pro 3.1, 2008 dual 2.8ghz computer. I bought it cheaply as the original owner claimed it had a problem where it would randomly sleep, and a hard reset was neccesary in order to restart the computer. On turning on the computer myself I soon saw what he meant, all of a sudden, quite randomly the screen would drop out entirely and about 8 seconds later the fans go on full whack. This could happen before the computer boots, or could happen 15 minutes later. Sometimes it would happen more often when say I watched a youtube clip on full size in 720/1080p. This shut down can only be stopped by hard resetting the unit.
Originally i thought it might of been the graphics card (Nvidia 8800 GT) which upon researching had found out there have been issues with this graphics card for other people in the past, however they speak of glitchy graphics, over-heating and 'baking' the card. I tested the temps on the gfx card and they were not abnormally high at all. Infact on monitoring all the temperatures when the computer was on i noticed no abnormality with any temps apart from maybe the north bridge which was max 62 C when idling. But my macbook pro hits 75 C on the CPU when using intensive software (logic pro etc). I also tested the gfx card in both available pcie slots aswell as cleaning out excess dust from the gfx card using compressed air.
The computer has a WD velociraptor 128gb 10k rpm HDD installed. I tested the computer with a 128gb SSD which i know worked. I managed to install snow leopard from a DVD onto it before a crash and the computer worked for maybe 20-25 mins then it blacked out again. Not the hard drive then. Tested all the ram (6gb), moved them around etc, no red dimm lights on either board. Not the ram.
The only main components left really are the power supply and the logic board. I have no red leds on the logic board lighting up, so no obvious failures. And when the computer is on it works a treat.
Does this sound like the PSU is dying/dead? I thought this could be an easy software fix, but am now chasing the hardware train....
Any help would be greatly appreciated and thanks in advance!
Cheers!
Catro

I had a similar problem. Old mac pro and randomly the monitors would go black.
Replying to this incase anyone else has this problem…
Tried all the restarts under the sun, reset the board only to get temporary fix. It got to the point where the monitors would black out repeatedly after a few minutes of resetting.
My final solution (May not work for everyone): Remove the graphics card and check to see if the copper fins in the heat sink are "caked in dust". On my ATI card i can see this from the bottom end. I took the hoover and placed it at the opening and the bit of the hoover nozzle that stuck out I covered that with my finger for maximum suction, I repeated this process from the opposite side where the air exits, after a few seconds the suction was enough to clean out the heat sink and the fan started to spin with the power of the suction.
I have replaced the card and now my mac is running very quiet for the first time in years. On removing the graphics card I noticed the bay was very hot including the card. I'm guessing the card cuts out to protect itself from overheating.
Don't forget to wear an anti-static wristband or discharge yourself first. Using a hoover was a drastic last step. Don't think an air duster would solve the problem as well as suction.

HP Pavilion g6 wont start up after updating windows, no blue/black screen or fan noise

Clicked update and shutdown on the laptop last night, tried to turn on this morning getting no response at all, power button is intact its not damaged or overheated any ideas?

Hi @ESAWatson91 ,
Welcome to the HP Forums!
It is a first rate place to find answers and information!
For you to have the best experience in the HP forum I would like to direct your attention to the HP Forums Guide Learn How to Post and More
I understand that after doing an update and shutdown, that when you try to power it on you are getting no response at all.
First I would try a hard reset. Performing a Hard Reset or Forced Reset.
If that did not help, please provide some more information.
Do see any power lights on the adapter?
Do you hear the fan or hard drive spin up?
Do you hear any beeps or see any flashing lights?
If you would like further assistance please provide your exact model, the OS and reply to my questions.
How Do I Find My Model Number or Product Number?
Good Luck!
Sparkles1
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
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Won't start up, black screen, only fan noise: want to recover: help

So, this may be the end of the powerbook 17".
And unfortunately, the last time I backed up was 2 months ago on a now dead Lacie external.
No kidding.
It won't accept a startup cd, it won't even grab a cd into drive.
So, what's the chance I can recover and how do I do it?,

Try things in Apple doc.#300537.
Cheers!
DALE

Mac Pro will not boot, constant loud fan noise and nothing else

hello,
earlier tonight,i put my mac pro on sleep, then later on, when i wanted to take it off sleep and use it, it made the loud fan noise, which it always does but goes away, but this time it the fan wount slow down and the loud noise stays and i dont see anything on the screen. im guessing the fan noise is the ATI x1900 card...
any help please..i just bought it 2 months ago...

Hi, here are the steps I would go through. I would unplug the Mac Pro completely from everything and look at the video card's fan intake to make sure it isn't plugged and just make sure everything "looks" correct. I would then plug the machine back into one monitor/keyboard/mouse (leave all the other peripherals disconnected. Once that is done push the power button. Does anything happen? If not then if you have another mac and an external hard drive, make a copy of the OS on the drive and see if you can get the Mac Pro to boot off that drive. If the video card doesn't work then it will not show anything when booting off an external drive. If the external boot does work then I would suspect that you have a bad hard drive (or it crashed). At that point I hope you have a back up of all your data and such.
Mind you these are steps I would go through. What a nightmare. One other thing to check, make sure your monitor didn't die.
Message was edited by: jlseattle74

My 2008 Macbook Pro makes a loud fan noise.

Hello -
I bought my 15" macbook pro back in October 2008. I was very happy with my purchase due to the machine's performance. But over the past year I have noticed an increase in the fan noise. It almost sounds like it's hitting against something at a very high speed, hense this irregular fan noise. The noise also increases drastically when I am working on Photoshop or InDesign. I also partitioned my hard-drive to hold windows so I can work on AutoCad.....noise increases also as I work on my machine.
Why is this happening? Could this loud fan noise damage any internal component to the machine? Should I bring it in to Apple immediately?
Thank you!

Some of the applications that you mention are somewhat CPU intensive which creates heat and results in fan speed increase and hence additional noise (to state the obvious). However if you are experiencing excessive noise when CPU loads are modest it could be that your fans are failing as all mechanical devices eventually will or you may have 'schmutz' inside that is the cause of the unwanted noise.
I suggest you open the MBP and see if there is any dust in the fans that may very well be affecting their performance. After 4 years, this is not an uncommon situation and it could be the solution to the problem.
If not, then you may consider getting replacements from iFixit or Powerbook Medic and replace them your self. It is not rocket science in this instance. If you suffer from chronic fingerfumbilitis, then have the Apple store do it for you.
Ciao.

Macbook pro retina start to make loud fan noise and work slow

I bought macbook pro retina display less than one years ago. For some reason my macbook pro has been making loud fan noise for about five mounth. Whenever macbook pro makes the noise, all the programs start to run slow. Typing, opening safari, and etc takes forever. It takes 20min to 40min for the noise to stop. At first, the macbook pro made noise once or twice in a day, but now it's making the noise frequently; It happens every 2-3 hours. It got to the point where it start to annoying me. Is there a way for me to fix this issue? If not, can I use one year warrenty to fix this problem? Thank you.

If your Mac works slowly when fans turn on, it's quite possible that there's a process which is eating the CPU and/or RAM.
Open Activity Monitor (in /Applications/Utilities), select "All Processes" above "Show" (in the toolbar) and then, order the processes by CPU usage. Do you see any process which is consuming more CPU or RAM? If so, tell us the name.
Additionally, you can reset the SMC > http://support.apple.com/kb/HT3964

What it means loud fan noise?

Hi there,
I have a Imac G5 Rev2 and I read a lot of topics about loud fan noise. I bought an Imac about 4 months ago and the fan noise is a bit louder than when I just got it. What do all the users mean by "loud"? It is only once, when I was running the hardware test, that I heard my Imac did the "airplane" (very loud) fan noise. When I am using applications using a lot of CPU, I hear a louder fan noise but not the "airplane" noise.
Then what is the most reliable program to check the temperature of the iMac G5?
Which range of temperature is normal for the iMac?
Thx in advance for ya replies....

I have a Rev b just like you and light use the temp of the cpu is 65-68º C while the hard drive is about 53º C. This is the temp as I am using two browsers, with iTunes and MS word open and running.
For a temp program you can try Temperature Monitor at this link:
http://www.bresink.de/osx/TemperatureMonitor.html
You can also try the very handy iStat Pro Widget (Of which the temps I gave you above came from). It has a lot of very useful data, from CPU to Memory usage, from CPU to Hard Drive temps---and even the speed of all three fans. You can find that here:
http://www.apple.com/downloads/dashboard/status/istatpro.html
Hope this helps.

Loud fan noise-Macbook Pro

I'm due for a new battery and I was wondering if that was causing a loud fan noise.
this is my activity monitor:
Active Memory: 1.47 GB
Free Memory: 1,012.1 MB
Wired Memory: 608.8 MB
Used Memory: 2.88 GB
Inactive Memory: 835.2 MB
Total VM: 132.11 GB
Number of processes: 66
PID    Process Name              User       CPU      Real Mem        Virtual Mem
0      kernel_task               root       5.3      240.0 MB        2.41 GB
1      launchd                   root       0.0      1.3 MB          2.36 GB
10     kextd                     root       0.0      6.0 MB          2.36 GB
11     notifyd                   root       0.0      640 KB          2.33 GB
12     diskarbitrationd          root       0.0      1.8 MB          2.35 GB
13     configd                   root       0.0      4.6 MB          2.38 GB
14     syslogd                   root       0.0      832 KB          2.36 GB
15     DirectoryService          root       0.0      6.3 MB          2.36 GB
20     ntpd                      root       0.0      1.1 MB          2.32 GB
24     usbmuxd                   _usbmuxd   0.0      2.1 MB          2.35 GB
27     securityd                 root       0.0      3.3 MB          2.36 GB
30     mds                       root       0.1      68.2 MB         2.52 GB
31     mDNSResponder             _mdnsrespo 0.0      2.4 MB          2.37 GB
32     loginwindow               izamarvira 0.0      9.3 MB          2.64 GB
33     KernelEventAgent          root       0.0      1.0 MB          2.34 GB
35     hidd                      root       0.8      1.7 MB          2.35 GB
36     fseventsd                 root       0.0      2.8 MB          2.36 GB
38     dynamic_pager             root       0.0      796 KB          2.32 GB
45     blued                     root       0.0      4.9 MB          2.37 GB
46     autofsd                   root       0.0      1.0 MB          2.35 GB
49     SmartwareServerApp        root       0.0      2.6 MB          630.6 MB
50     WDDMService               root       0.0      916 KB          616.4 MB
52     distnoted                 daemon     0.0      1.5 MB          2.35 GB
70     coreservicesd             root       0.3      21.3 MB         2.38 GB
73     WindowServer              _windowser 2.3      63.6 MB         3.02 GB
77     cvmsServ                  root       0.0      864 KB          2.33 GB
87     coreaudiod                _coreaudio 0.0      4.7 MB          2.36 GB
91     launchd                   izamarvira 0.0      1.2 MB          2.36 GB
95     Dock                      izamarvira 0.0      16.0 MB         2.69 GB
96     SystemUIServer            izamarvira 0.0      19.2 MB         2.71 GB
97     Finder                    izamarvira 0.1      41.7 MB         2.77 GB
101    pboard                    izamarvira 0.0      860 KB          2.32 GB
106    fontd                     izamarvira 0.0      12.4 MB         2.40 GB
111    UserEventAgent            izamarvira 0.0      6.7 MB          2.37 GB
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124    netsession_mac            izamarvira 0.2      12.6 MB         803.7 MB
125    netsession_mac_da586ac    izamarvira 0.0      12.6 MB         801.3 MB
131    WD Quick View             izamarvira 0.0      17.4 MB         970.7 MB
135    GrowlHelperApp            izamarvira 0.0      13.1 MB         2.64 GB
138    Monitor                   izamarvira 0.0      9.1 MB          970.7 MB
140    Dropbox                   izamarvira 0.1      67.8 MB         1.04 GB
143    AAM Updates Notifier      izamarvira 0.0      10.6 MB         944.5 MB
181    dbfseventsd               root       0.0      364 KB          582.8 MB
182    dbfseventsd               root       0.0      4.3 MB          590.8 MB
183    dbfseventsd               izamarvira 0.0      168 KB          582.8 MB
204    Image Capture Extension   izamarvira 0.0      6.6 MB          2.64 GB
243    AppleSpell.service        izamarvira 0.0      6.7 MB          2.37 GB
491    mdworker                  izamarvira 0.0      21.9 MB         2.38 GB
506    ocspd                     root       0.0      2.5 MB          2.37 GB
529    diskimages-helper         izamarvira 0.0      13.8 MB         2.38 GB
534    hdiejectd                 root       0.0      1.7 MB          2.35 GB
611    Preview                   izamarvira 0.0      23.8 MB         2.70 GB
715    diskimages-helper         izamarvira 0.0      13.9 MB         2.38 GB
802    Google Chrome             izamarvira 0.7      230.0 MB        1.48 GB
805    Google Chrome Renderer    izamarvira 0.0      88.1 MB         1.11 GB
808    Google Chrome Helper      izamarvira 0.0      44.1 MB         1.05 GB
813    Google Chrome Renderer    izamarvira 0.5      76.9 MB         1.10 GB
816    VDCAssistant              izamarvira 0.0      4.2 MB          2.62 GB
917    Silverlight Plug-In (Chro izamarvira 11.5     215.8 MB        1.36 GB
919    Google Chrome Renderer    izamarvira 0.1      134.6 MB        1.18 GB
920    PepperFlashPlayer (Chrome izamarvira 1.6      145.3 MB        1.22 GB
944    Google Chrome Renderer    izamarvira 0.3      93.1 MB         1.12 GB
958    Google Chrome Renderer    izamarvira 0.1      73.7 MB         1.11 GB
960    Activity Monitor          izamarvira 4.2      21.6 MB         2.74 GB
962    activitymonitord          root       0.6      1.3 MB          2.33 GB
963    Quick Look Helper         izamarvira 0.0      5.9 MB          2.87 GB

Hi,
I had the same problem, one of my fans was making a loud noise even when my computer was just idling. It can occur because you dropped the computer, thus damaging one of the fans, or the fan broke down partially. I took mine to the Apple genius bar and they ordered a new fan for me and installed it in under a week (all covered by warranty). This is likely a hardware and not software issue, the only way for a fix is taking it to a genius bar.

Updated to Mavericks and loud fan noise

Just done a clean install of Mac OS X Mavericks, updated fine, everything went well.
however most of the time, my macbook pro fan noise would go really loud for 5-10mins even in idle or if im on the internet just browsing.
this has not happened ever on mountain lion.
its really weird.
Does anybody know how to fix this? or is this a bug and would i have to wait for a software update?

Hello all,
I am having the same issue, constant loud fan noise in my Mac book pro. Below are the specs:
"MacBook Pro
13-inch, Mid 2010
Processor 2,4 GHz Intel Core 2 Duo
Memory 4 GB 1067 MHz DDR3
Graphics NVIDIA GeForce 320M 256 MB
Software OS X 10.9 (13A603)"
And CPU is 90% idle.
I tried to reset the SMC using the steps:
1. Shut down the computer.
2. Plug your Mac in, if not already plugged in.
3. Press (left side) Shift-Control-Option & the power button at the same time.
4. Release all the keys and the power button at the same time.
5. Press the power button to turn on the computer.
Inaddition, i have reinstalled OS and reset PRAM memory but the problem still exists.
It really feels annoying with the fan sound. Could someone give a fix.

Loud fan noise on mountain lion, Mac Pro early 2008

Hi there,
I've recently installed mountain lion 10.8.5 lon my Mac Pro , early 2008, 2,8 GHz, 24 gb ram, 2x ATI Radeon 2800 XT.
To give it a clean shot i clean installed it on a sep. Partition, no upgrade from my previous Snow Leopard.
The Machine usually works quiet, i've measured via Isat Menu:
exhaust fan: 681 rpm
HD/expansion: 1100 rpm
After running Mointain Lion, latest update version, i get a much louder fan noise than in snow leopard:
exhaust fan: 845-950 rpm
HD/expansion: 1500 - 1800 rpm
The activity monitor shows no significant CPU usage, only the kernal has over 90 threads constantly running.
I've heard that this is a known issue but it's never been resolved. SMC and PRAM reset did not work at all.
when i go back to snow leopard everything gets back to normal. Yosemite is even harder on fan noise than mountain lion
so i've rolled back to mountain lion.
Any idea ?
dezzo

no one here with the same problem on an early 2008 Mac Pro ?

Why is my imac (mid2011) doing a loud fan noise?

I had my imac since 2011 and never had a problem with it, until 1 month ago. It started to make a loud fan noise. I already reset the SMC, (http://support.apple.com/kb/HT3964) but I keep hearing it. Also checked in disc utility and everything is fine (not a disc problem).

I run Apple Hardware Test and gave me this:
4SNS/1/C0000008: TL0p-- 124
(during the test the imac went silent for a couple of seconds)

U310 loud fan noise

Hey everyone!
I just got a new u310 a few days ago. It has Windows 8 installed. I started working on the notebook, hoping the fan noise would eventually stop but it is really really noisy. I installed a software, which would indicate a temperature of 36°C, so usually the fan shouldn't be working on such a high level in the first place. I have read a couple of posts about this, but no one seems to have found a solution for tge U310 specifically.
Does anyone have the same problem? I thought maybe there is a BIOS update which would help...?
Thanks a lot,
Sonni

hi Sonni_87,
The loud fan noise that you're hearing, is it a:
1. A wind noise?
- If it is, this is normal as faster fan speed causes wind noise on the vents (this usually happens if you're getting unusual heat and the fan spins at a higher rate to cool down the CPU/GPU.
2. A grinding / rattling noise?
- this indicates that the fan is struggling - It's possible that it's hitting something, is dirty or is starting to wear out and needs to be replaced.
Also, the BIOS can configure on how the fan spins. It's possible that the configuration is set to make the fan spin at a higher rate even on less load on the CPU/GPU (like in this article). In this case, you may need to contact lenovo report this issue
Regards
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Black Screen...loud fan noise

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