Won't start up-no fan noise

((I accidently posted this in the Mac Pro forum instead of the Power Mac forum. I can't find how to delete this post.))
My mac recently shut itself off and refused to start up again. It had been giving me problems prior to this-I would boot up and the monitor wouldn't display, even though I could here programs starting and whatnot. Occasionally it would boot and not display the menu bar on the top of the screen. I was crossing my fingers and hoping it wasn't anything too bad.
But now it's broke. When I hold down the power button, the white LED lights up, as well as some red light in the machine itself. There's a CLICK-CLICK noise when I press the button, and after the second click, the red light goes out. When I lift my finger, the white light goes out.
I'd love to run the Hardware Test, but how do you get the CD tray open with the machine off?
I've tried to look the problem up, but most of the help seems to involve actually having your computer turn on at least halfway.
Message was edited by: Para_chan
Message was edited by: Para_chan

Portables that will not Power on.
http://support.apple.com/kb/TS1365
Go step by step.
Note: Steps 5 and 6
Best.

Similar Messages

MacBook Pro won't start at all - clicking noise with black screen

Early 2011 MacBook Pro won't start: makes clicking noise after power button is held down, but no screen movement and after click, sounds like computer just stops working. Already did a SMC reset, and undid battery to try to run on charger power only. Same result every time. Also, my Apple Care expired 3 days ago. A few weeks ago had to repair a disk using Disk Utility because there was a discrepancy between how much storage was in the drive versus how much was actually being used.

You likely have the problem that many of us 15" and 17" 2011 models are having: a faulty soldering GPU and as discussed here -> https://discussions.apple.com/thread/4766577?tstart=0. It usually, but not always, beings with screen glitches and then gets to the point where the machine will simply not boot.
It's ashamed that you're not longer under AppleCare which would have, at least, got you a new logic board. A new logic board, however, doesn't usually fix the situation - only a BGA Reballing of the GPU seems to have long-lasting fixes.
Read through a few the articles (not all of them!) and make the decision yourself - and then make the decision about whom your going to contact.
Good luck,
Clinton
MacBook Pro (15-inch Late 2011), OS Mavericks 10.9.4, 16GB Crucial RAM, Crucial M500 960GB SSD, 27” Apple Thunderbolt Display

IMac won't start just the fan

Ok I have the dreaded black screen when I turn on my iMac but unlike most of the posts regarding this topic the HD doesn't seem to spin up. All I can hear is the fan, and no other activity.
It started with my screen freezing and the only thing I could do was to turn off the computer. This has happened a few times in the past and turning off and on always seemed to resolve it. But this time when I turned it on all I got was the fan noise. No chimes, nothing. I've tried resetting the PMU and removing the extra ram but know luck.
Most people seem to think this is a logic board fault, but then they seem to have an active computer just with no display. Any ideas greatly appreciated ?
Many Thanks
Mark
iMac G4 1.25GHz iBook G4 1.33GHz Mac OS X (10.4.6)

MarkWelcome to Apple Discussions.
Sounds like you've done your reading!
Given that your hard drive doesn't spin up I would be very suspicious. Could you confirm that your iMac shows any signs of life?
Does the caps lock light work?
Do you get the start-up chime (or beeps)?
Do you have the display adaptor to see connect your iMac to a TV and test it?
When you said 'started with the screen freezing' do you mean Kernel Panic, blank screen or the SBBOD?
I regret When I had similar symptoms a new logic board was required (at £325 plus fitting).
To answer your question on Part No.s:
Unfortunately doumentation on the iMac G4 20" is sadly lacking as they only existed for a few months (Nov 03 - Jul 04). The 20" was just a heavy version (heavy so it doesn't topple over) of the 17". I guess the larger display may require a larger PSU though.
Just done a search on AMP.co.uk and it came out with this part number: (661-3104)which is different to the 17"/15" PSU part number.
HTH
mrtotes

My mac book pro won't start only the fan starts running alone when I turn it on but no display is shown on the screnn

My mac book pro wont start only the fan starts running when i turn it on but no display is shown on the screen

Have you tried this yet?
Intel-based Macs: Resetting the System Management Controller (SMC) - Apple Support

After powering on, iBook G4 won't start up and fan goes crazy

I closed the lid of my iBook almost all of the way, but for some reason the display turned off. I'm not sure if it went to sleep or not; I can't remember if the front light flashed or not. I pressed the power button, but it wouldn't turn back on. I think I then held down the power button and it powered on, but the fan just started going at full speed and the computer never booted up. Since then, it refuses to boot; the fan just spins at full speed and the screen stays blank. I've tried resetting the PRAM and and PMU but it wouldn't work. Usually, the fan immediately starts going, but after resetting the PMU it takes a few seconds before the fan turns on. When I first press the power button, I can feel the hard drive "click" on. Once the CD drive did made those weird noises it's supposed to make, but the rest of the time it never does even that. It also never chimes. I'd really appreciate any help or suggestions. Thanks!

Welcome to Apple Discussions
The display is designed to automatically go into sleep mode when you shut the lid. That part is normal.
However, this part is not: it sounds like the wire connected to backlight on the lid is shorting out, preventing your machine from starting. The wire runs near the lid's hinge. Seems opening/closing the lid over time can cause the wire surface to degrade. Once the wire itself is exposed, the machine won't turn on if there is an electrical short.
If this is what has happened to your machine (sure seems like it from your description) you'll have to return the machine for repair.

Sometimes won't start just makes sputtering noise, won't wake from sleep...

I've had problems with it falling asleep and not waking up (eventually leading to a restart) before, but recently it's not even starting up sometimes (without even falling asleep...or in this case...a coma...). I unplug it and plug it back in a couple of times which sometimes allows it to start up. I'm not sure if the fan's always revving or not (is it suppose to make noise? It's been too long since it's worked properly). There's also the sputtering noise all the time now. I've installed the new OS (10.5 Retail) just yesterday, but the problem still persists. I've changed the energy settings, left it off for a few days, unplugged it. Short of taking it apart (which I'm afraid to do) I've done everything I can think of. ;_;
Help?

Welcome to Discussions - it would be helpful if you told us which model iMac you are using. You have what sounds like a power supply problem, see if your numbers fit in Apple's Repair extension programs.
If there's a sputtering noise, does it sound electrical? If it's more like a clicking noise, that would indicate your hard drive is failing. Perhaps the best thing would be for you to make a backup of your data and then take the machine in for repair.

IMac won't start and making loud noises

When I start my iMac, the fan makes a really loud noise, it goes onto a grey screen showing a folder and a flashing question mark and face. My mac is a few years old and has lines going down the screen. Wondered if there was anything I could do to save it?

Before hauling a heavy computer to an Apple store, make sure you know how old it is, or the exact model. Apple only works on computers made in roughly the last five years, and the iMacs in this forum--G3, G4, and G5 models-- were all made prior to 2006. The description of the vertical lines sounds like a G5.
This article explains what Apple does and does not fix:
http://support.apple.com/kb/HT1752
Here are two articles to help you ID your model:
http://support.apple.com/kb/HT1758
http://support.apple.com/kb/HT2643

Powerbook G4 12" won't start up after fan running all night

I woke this morning to hear the fan running very fast and loud. The display was opened, so I quickly shut off the computer by holding down power button and then closed the display. After waiting a couple of hours, I turned on the power button and a faint blue desktop light appeared with a small folder icon containing a blinking question mark alternating with the apple faces icon. It doesn't go away. The battery is fully charged.
Please help! Thanks!

faint blue desktop light appeared with a small folder icon containing a blinking question mark alternating with the apple faces icon. It doesn't go away. The battery is fully charged.
That means that your system can't find anything to boot from. If you have your original OS X disks, put in the one that says 'AHT Version x.x' on the gray label in small print, and reboot holding the option key down. Choose the Apple hardware test, and when prompted choose the extended test. Does that tell you anything?
Another task is to reboot with the first system OS X disk in, and reboot holding the 'C' key, to boot from DVD. On the menu bar, choose Disk Utility, and first aid and repair the hard drive. Does this complete or give you any error messages?
Reset your PRAM:
1. Shut down the computer.
2. Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
3. Turn on the computer.
4. Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
5. Hold the keys down until the computer restarts and you hear the startup sound for the second time.
6. Release the keys.
If there are any Apple hardware test messages, please post back what they are.
If you are unable to use Disk Utility, or get an error message on not completing the task due to failure ... , your hard drive may be toast.

MacBook 5,1 Fan Noise During Normal Operation

Recently, my MacBook 5,1 with an Intel Core 2 Duo processor and 4GB of RAM has started making loud fan noises. The fan speed is steady at around 2,000 RPM (I belive this is normal), and the CPU temperature is staying around 60 degress celcius (also normal, I believe). I have done an SMC reset, done some troubleshooting, Activity Monitor isn't showing anything abnormal, and I have not installed anything recently or been using the machine in any way I haven't in the three years I've owned it.
Is the fan broken in some way? Is the MacBook just aging? Should I take this issue to a Genius Bar?

A lot of people have the same problem with the iX core macs. You can try Fan Control to gain manual override of the fan speed, if it bothers you, but I have to warn you, that semiconductors should not reach a temperature higher than 85C (185F), as some semiconductors will lose their conductivity above 85C. I don't exactly know what materials are there in the iX CPUs, but just to stay safe, don't go over 85C if not necessary. Also you should know, that if a semiconductor operates on high temperatures, it can lose its conductivity sooner than it should (think 25 years instead of 28), so use carefully. You can download Fan Control form http://www.lobotomo.com/products/FanControl/
Regards,
Gábor

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"?

Big fan noise problem: the rear fan won't shut off, the BIOS won't update, systemupdate locks up

I received new ThinkStaion (oh boy, lots of memory and CPU speed, yay!)
I unfortunately left the originally installed Vista OS on there. Very much regretting that as I believe it contributes to the following problems (BIOS).
So the original problem was that after just a month of using my new ThinkStation, the System Board died, and it had to be replaced. Honestly, all I did was choose the sleep or hibernate option in Vista to shut down. Afterwards,poof! didn't even get the proper Power lights on the system. I diagnosed this with the online docs and then sat for a few hours on our tech support line doing all the same things to re-diagnose it.
So after the replacement, the rear fan will not shut off. Jet engine noise all day. I went into the system settings and selected "Quiet" for the Fan settings but that did not help.
Research on this forum resulted in the possibility of a BIOS update fixing the problem. Comparison to my co-workers systems which arrived at the same time shows this BIOS is woefully out of date, so even if it does not fix the fan issue I want to update it. However, everything I've tried to do is failing for one reason or another.
(The fan issue does need resolution since in one week I will end up sharing an office (first time in many years, thanks IBM for nothing!) so since I don't want us both to have to wear noise cancelling headsets, I'd like to fix this without having to just pull the @#$@ power to the fan. Grrrr. )
I downloaded what I felt were the appropriate Lenovo apps to update both the BIOS and the serial number but none seem to work properly from the command line in Vista. One of the two (can't recall which) asks me to reboot and it never actually shuts down. Eternal "Shutting Down" message. Ga! The other throws some gosh awful
systemupdate le
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-69701
eternal reboot
BIOSD attempt:" 2xjy26usa
http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-69701
error 1275 no admin priv - I AM the administrator account, there is no other acct to use!
Then I decided Vista might be the problem and found sites recommending flashing the BIOS from a bootable USB. So I started down that path and after burning the wrong version, finally geting the AIK Vista tools installed and to the point of trying to make the USB bootable, it won't allow me to put the OS boot on it. Ah, for the days when a simple "sys a:" took care of that.
So, after reformatting the USB and pounding my head in the wall, keyboard, etc. I am at my wit's end. What to do. I just want the fan noise to go away.
This does seem to duplicate other forum messages but I can't get anywhere on this. Help!
Solved!
Go to Solution.

FYI to all the helpful folks here (and any looking to shut their jet engine off as well): Flashing the BIOS did the trick.
First I had to find a website with DOS OS files and put those on the USB instead of Vista. Oldie but a goodie, but at least it booted! No other versions would.
I had been intending to use the WinPhlash utility that Lenovo supplied with the BIOS update but since I was booting from DOS that was useless. However, I found a DOS version of it and used that instead. Boom baby! Flashed and rebooted.
It did take two boots to get it back to normal (first one gave very alarming messages about no operating system being found but I think it was just a remnant of the reboot that was triggered from the DOS session). A second boot returned life to normal and blissful silence from the server. And I was finally able to get the model and serial number back in there to get rid of the bootup message it throws for that too.
Ahhhhhhh.
Thanks to all for the hints - I believe I had gotten the idea of flashing the BIOS to solve this from some other thread I found here. This is a very nice forum to have bookmarked.

Mac Mini won't start and constantly makes disc ejecting noise

My Mac Mini won't start. It was working fine, then just locked up and won't start again. When I push the start button it just makes this repeated disc ejecting noise from the DVD drive. It doesn't make the chime noise or display anything on the monitor. I've disconnected the optical drive, but it didn't help. Then it just doesn't start at all. I thought that if I would disconnect the optical drive, that it would ignore it and just boot off the hard drive, but nothing happened. The power light comes on. Then, if I hold down the power button for 10 seconds it shuts down. The fan operates. It just never attempts to boot up. I can't put in a system DVD because the optical drive is just in eternal eject mode.
If you have any suggestions let me know. Thanks.

I have the same situation.
I think the drive thinks it has a disc to eject or part of the mechanism is stuck and can't return to it's resting position. I was going to disconnect as you tried but now I think I'll try to disassemble the drive to see if there might be some debris jamming things up.
Please let me know if you solve the problem.

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

Won't start up, makes weird beep, power light flashes, and fan revs

I just tried to install new ram, but now it won't start up. I put the configuration back to what it was, but still not starting up. It makes a different beep then the fan gets really load, and the blue light flashes slowly...
ahhhh... did I break it?

Hi don rumsfeld-
Greetings and welcome to the Apple boards
Flashes described here: About the Power Mac G5 (Late 2005) diagnostic LEDs
My guess is that the RAM was either not installed properly or not seated firmly. This may be helpful: Memory (DIMMs)
Replacement Instructions
Luck-
-DP

My power mac G5 won't boot up but has red flashing light and intense fan noise.

I Have a Power Mac G5 that flashes a red light that I've never seen before. There is nothing on the monitor and the fan noise is incredible.
HAs anyone ever had this problem?

Hi Michael,
It's normal for the fans to go full speed if the OS won't load to handle them.
Where is this red light, on the logic board, or front panel?
Can you count the beeps or flashes?
1 beep = no RAM installed
2 beeps = incompatible RAM types
3 beeps = no good banks
4 beeps = no good boot images in the boot ROM (and/or bad sys config block)
5 beeps = processor is not usable
In addition to the beeps, on some computers the power LED will flash a corresponding number of times plus one. The LED will repeat the sequence after approximately a 5-second pause. The tones are only played once.
Note: In this case, a flash is considered to be 1/4 second or 250 ms or greater in length.
http://support.apple.com/kb/HT1547
LED 1—CPU A: red—contact Apple or an Apple Authorized Service Provider
LED 2—Overtemp: red—contact Apple or an Apple Authorized Service Provider
LED 3—Power On: red—the main power is on
LED 4—Trickle: yellow—Power Mac G5 is plugged into the wall correctly
LED 5—Open Firmware good: green—no problem
LED 6—CPU B: red—contact Apple or an Apple Authorized Service Provider
LED 7—Checkstop: red—contact Apple or an Apple Authorized Service Provider

Won't start up-no fan noise

Similar Messages

Maybe you are looking for