Startup sound heard continuously

Hi All
I have a Macbook Pro A1226 .
When I push the power key , the Startup sound heard continuously , but ther is no picture on the screen . help me to solve this problem.

I am having the same issue.
When I try to start my Macbook Pro, I get an endless loop (well at least 5 minutes before I give up and power it down) of the start up chime. It just keeps repeating over and over. THe screen stays black and never lights up. THe chime varies a slight bit, occasionally sounding like it cuts out half way before it finishes, but then a full chime will happen again.
I have tried the PRAM zap, Systems Management Controller reset (disconnect power and battery, hold down power button for 5 sec, reconnect to power and try again, as well as the Cmd-Option-Power hold down that is recommended for the newer Macbook Pros), tried safe start up (holding shift) even tried to boot in Target disk mode just to see if I could get info from the hard drive.
I have tried reseating the ram.
I have tried it with only battery (which does seem to be charging fine), with only ac power, with both.
Not sure if it anything but When it is plugged in and the battery is fully charged, the green light goes out on the charger and no light comes on.
Any help is greatly appreciated.

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Continuous startup sound

After starting our MacPro the startup sound continues over & over again.
To stop it we must switch off the power & restart again.
Is this a symptom of rising doom?
SPARTA-.FILM
Kalle Freynik
[email protected]

Try to unplug any other harddrives, that might couse this problem. If The Chime still going over and over again.
Try to disconnect any other hardware and see if there might be a faulty hardware, or perhaps broken.
Otherways read this,http://support.apple.com/kb/HT2341?viewlocale=en_US

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Hi,
This issue also can be caused by Sound Card Driver, please also try to reinstall it for test.
In addition, please also check Event Viewer if it identify this problem.
Roger Lu
TechNet Community Support

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Hi ThorlQ,
Some required information are needed for us to help you.
If you checked other windows startup sound in sound Tab, We would appreciate it if you could share with us some update.
Does other sound/windows startup sound work properly with speaker?
Did you check your issue under new account?
If you are using an internal/external speaker, does your headphone/speaker have driver installed.
Check your issue under clean boot mode
http://support.microsoft.com/en-us/kb/929135
Update your sound driver for good measure.
Use Audio troubleshooter for Windows
http://windows.microsoft.com/en-us/windows7/open-the-playing-audio-troubleshooter
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Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact [email protected]

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no problem:
before going deep, some points here:
I own about 13 Apple Devices since almost 7 years and my country is the first where Apple has the most OS market share:
http://royal.pingdom.com/2011/03/16/the-10-most-mac-friendly-countries-on-the-pl anet/
Also, I have about 50 "close" friends that have Mac OS products (imacs, MacBook, Air...)
I never, ever had a recovery problems in 7 years and that's why I buy Apple products.I never, ever heard a friend, in my country or in another that was stuck because of the start sound. (i already have had a friend that have to replace it, but starting sound was not necessary on this case).Here 4 situations with a MacBook Air:
You try to start the Mac, nothing happen, even if the sound would work. In this case, battery was completly down. So you plug it, wait 3 mn and start it. What would be the use of the sound here? Should they not "spare" some battery just to make the sound work? No I do not think so.
You try to start the Mac, you disabled the sound and nothing happen. You bring it to Apple and they discover that your screen is dead. What would be the use of the sound here?
You try to start the Mac, you disabled the sound and nothing happen. You bring it to Apple and they discover that your processor is dead. What would be the use of the sound here?
You try to start the Mac, you disabled the sound and nothing happen. You bring it to Apple and they discover that you could repaired the problem if the starting sound could be heared. But you just putted on mute before the last shutdown. (so why not make the sound work, even though you putted on mute on this case?)
Seeing your "level" and points, I am pretty sure you will come with many counter arguments and I do not really care about them frankly.
My point is, after 7 years using Apple products, I am more than happy to have them and I will continue to buy them because they are so amazing, it never appear to me that I need this starting sound that causes me more trouble when i start it and my wife or kids are sleeping not too far, trying everytime to put me far away and try to hide the Air under pillows when I start it.
Frankly, if that's going to happen to me in the next 7 years, I would be more than happy to go to my Apple store and bring them back to their specialists and hear I was a bad boy, i should not have disabled the sound. I will not care 1 second trying to fix it myself if I do not see how to fix it. And I will return home, with new Apple products I would have buyed in the meantime.
My turn to ask you a question, if your car tomorrow does not start (you do not hear the starting sound ;-)), are you going to try to remove the motor and see if perhaps you can do something yourself?
If you are a mecanics, maybe, if no, I doubt.
If there so many threads about this and some software build around this, it means there is something about it.
I guess you are going to defend your point telling other things...
If that happen to me, I am sure Apple guys will fix it. That's my ultimate solution. Period.

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Hey there Apple forums!
I decided to install Windows 7 on my Mac a while ago. I had Bootcamp 3.0 and all the problems related to audio that BT 3.0 had, including the red optical light. Once BT 3.1 was released, I decided to install it. Notice how I hadn't changed any driver from Bt 3.0 until I installed 3.1.
Once I installed the update, most audio problems were immediately solved. No more ghostly red optical light, no more laggy audio, etc. Audio output was still low, but nothing "Enchance audio output" couldn't solve. I was seemingly happy, until i realized that the windows 7 startup sound played no more.
By startup sound I mean the chime that plays when you're in the login screen. This is a very small glitch, as it used to work in Bt 3.0, even with the audio issues it had.
Is there any solution? And before you begin asking protocol questions, yes, the startup sound IS enabled, yes I have the default Windows sounds set, I haven't changed the theme (don't know if that even matters, it shouldn't matter).
If it helps, when i connect two low speakers to the audio output jack and start Windows, and raise the volume, I CAN hear the startup chime in the login screen. But there's not even a faint sound when the external speakers are gone.
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Hi
Had same problem, tried everything like reinstalling drivers but still the problem continued. However today i tried changing the driver for the sound card to the generic driver and rebooted my macbook pro. on startup the sound card would not work on the generic driver and the system kicked in with an automatic troubleshoot and installed the correct drivers.
Somehow this has enabled the startup sound to work and the system doesn't startup in a muted state.
Haven't a clue why or how this has worked or how long it will continue to work but give it a go.

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My MacPro emits the startup chord, loundly, from the internal speaker. All other sounds come from the external speakers. When I get home late it's like to wake the dead if I turn on my Mac.
This did not work this way before, the startup sound played through the external speakers and I could turn them down.
Any ideas how to kill the startup sound or make it play through the external speakers?
Thanks.

Well, you know that's a funny thing, because I didn't actually intend to mute the startup chime. I just wanted it routed to the external speakers where I could control the volume properly, like the first poster. But the chime doesn't sound out of my external speakers. I don't hear it at all.
And I don't care. If my Mac fails some test, it isn't going to work right, I'll find out about it anyway. I also don't care because in 20 years of owning Macs, if there was a problem with my Mac I can't remember any of them being due to a failed self test, it was usually a hard disk failure or something on the motherboard while I still got the normal startup chime. The power on self test does not, for example, tell PowerBook G4 owners about the widespread problem that their lower RAM slot has failed. I just haven't found the chime to be useful, while many users find it to be extremely annoying. Apple could just flash the front panel LED differently.
The only time I've ever heard the failed self test tones is when I've played them back from some web page or utility that tells you what they mean.

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Hey there Rolf,
Resetting your PRAM should return your startup chime on the computer. This article will walk you through doing that on Mac OS X Yosemite:
OS X Yosemite: Reset your computer’s PRAM
Resetting PRAM may change some system settings and preferences. Use System Preferences to restore your settings.
Important: To print these instructions, click the Share button in the Help window, then choose Print.
Choose Apple menu > Shut Down.
Locate the following keys on the keyboard: Option, Command (⌘), P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on your Mac.
Immediately press and hold the Option-Command-P-R keys. You must press this key combination before the gray screen appears.
Continue holding the keys down until your Mac restarts, and you hear the startup sound for the second time.
Release the keys.
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Thank you for using Apple Support Communities.
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I own a macbook pro 15" bought on may 2011, working with Snow Leopard OS. It worked very well until it presented troubles with startup sound which suddenly completely disappeared. I cleared this reseting PRAM / NVRAM as explained in the Apple Support.
Since then, another trouble appeared : startup sound reverted to a maximum level.
I have tried many solutions unsuccessfully :
- Lowering sound level, even to mute, before shutdown : no effect.
- Starting my Mac with a connected headphone : no effect. The sound continued being emitted by the build-in speakers
- Putting a toothpick in the headphone socket to eventually resetting anything wrong : no effect
- Putting to the trash "com.apple.audio.SystemSettings.plist" and "com.apple.systemsound.plist" files and restarting my computer : no effect
- changing settings in the "Sound > out" category in the Pref Panel : no effect
- Reseting PRAM and NVRAM again : no effect
- Reseting SCM as explained in the Apple Support : no effect, startup sound is still to the maximum level.
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I have downloaded and installed startupsound.prefpane. It seemed to have no consequence on my issue. I then thought that, maybe, putting "com.apple.audio.SystemSettings.plist" and "com.apple.systemsound.plist" files from MacHD>Library>preferences>audio to the trash again could solve it. I did so and also added 2 "sound preferences files" from the "MacHD>Library>preferences" directory.
I then restarted my computer and "God saved me!" : it worked!
However, making some tests, changing sound level before restarting : no effect! Startup sound is still at its minimum and nothing make it change!
Uninstalling Startupsound.prefpane has even no influence on it.
I am just... desappointed
I just can't understand.
Any idea?

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I have a iMac 2.4 GHz with 4 GB RAM and running MacOs 10.5.8
A few weeks ago it suddenly went dead. When I try to startup again, no startup sound appears and no video (black). Suddenly again it startup with sound and video and worked about 30 sec then went dead again (?). I have worked earlier as technician so I opened the iMac and I saw that only 3 of 4 leds lit when I try to start it up. The 4:th led tells me: "LED 4 lights only if the computer detects an over-temperature condition. This LED will be OFF when the computer is turned on and running at the correct temperature".
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i have an 2gzh intel macpro. I've heard no startup sound for about 12 months. When I reset the pram I hear the chime, but any startup after that is silent.
I'm running 10.4.11 - I'm thinking of getting a new HD and upgrdading to 10.6 in any case, but I assume this won't solve the problem anyway..? I've no new mail sound either but I've read that this is a problem in 10.6 too..

hi - simple external speakers yes. I've just looked at the settings and I'd set sound effects to be played through the internal speaker - the sound was turned down; I got the audio blip when I increased the volume, but still no alerts etc.
I altered the seting to play through line-out and I got the new mail sound again, I switched it back and forth a few times trying to work things out and now I've no sound again. itunes etc works ok, just no alerts.
there's no dedicated sound card as far as i know..

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wm4fu,
Removing the startup sound is a VERY VERY bad idea. The tone is there for a reason and at some point you very well may have a need for it. First, follow the instructions in your owners manual where Apple advises to put the computer to sleep when not in use.
The reason the tone is there is to advise when the system is trying to boot, there are several diagnostic tests that require the startup tone to be heard before beginning the tests; these include SMC Resets, PRAM Resets, Starting in Safe Mode, Booting to the Recovery Partition, etc.. without the startup tone you cannot do any of these therefore it's a VERY VERY bad idea to occlude the tone.

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My MacMini is set up in an area where the startup sound (the chime at the beginning of booting up) can wake up people that are sleeping nearby. I would like to turn off the startup sound, or at least change its volume to inaudible. Is there a way to do that?

Trying to change your opinion, no, disagreeing with your opinion and explaining why, yes. It would not meet the definition of reckless because it indeed has a purpose. The problem with allowing the Mac to communicate its issues with a light only is that the blind, who do use computers, would not see it. Just as Macs with tones only cannot be heard by deaf folks who use computers. All Macs at one time in the recent past used tones and power indicator lamps to communicate. Mac minis still do, and Mac Pros, but I am not certain of the laptops. iMacs lost their power indicator lamp with the advent of the aluminum design.
Sometimes Apple lets others solve issues with Mac OS X and the Macintosh. The Startup Sound preference pane has solved it for me for many years on multiple Macs. I have not muted it, but I have turned it down permanently to a much softer volume.
As far as correcting your spelling, English is not my first language, my spell check did that.

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However you can lower the volume.

Won't turn on past the startup sound

Hello,
I'm a student studying abroad right now in Senegal, part of Sub-saharan Africa (which might help for later on).
My iBook won't turn on past the startup apple noise (the daaaaauummm). When I press the power button it makes that noise, along with a minimal amount of internal processor noise, and then nothing past that. The internal noise basically stops, and nothing comes up on the monitor. This problem started yesterday--I was using my computer and then the screen started to go fuzzy and get static and then it just went blank. Although I said that I don't get anything past the startup noise, I think my computer is still on (even though it isn't doing anything) because if I want to get the startup noise again I have to force shutdown the computer (hold down the power button for 10 seconds). Furthermore, when I do get the startup noise, the lighted ring around where the power adapter plugs in goes from orange to yellow and stays yellow for a bit. However, no light illuminates around the power button on the computer.
At first I thought maybe there was a problem with my monitor. I followed two of Apple's troubleshooting steps, resetting my parameter RAM (I think holding control command P and R) as well as resetting my computer's PMU (shift control option and power button) and for both of those, I managed to actually get something on my screen--the apple with the gear around it popped up and stayed there, but then after about 3 seconds it got the same staticky and lines and then went black again. When I tried to replicate this by doing the exact same thing (for both solutions) I was not able to get past the startup sound (ie the screen stayed blank) and it was back to square one.
Basically, I'm stumped. There are power cuts here in Senegal, along with subsequent power surges when the power comes back on, which lead my Dad to think that maybe my motherboard got fried. However, there is a power adapter on the cord which should block against that. Furthermore, that won't explain why the laptop was working right before it fritzed out on me, even though it was not plugged in. I'm thinking that maybe there might be a bug in my computer (like a physical one that crawled in). I am thinking this because there are bugs that crawl around my computer and under my keys (it's not as gross as it sounds--well actually I guess it is...) and furthermore I was out of town this past weekend so my computer was sitting idly in my room. Could it be that a bug actually made it deeper into my computer? But also, that still wouldn't explain why I was able to make it work on Monday.
I will be here in Senegal for 3 more weeks, but I would like to use my computer before then. Is there anything I can try to fix myself here, or will I have to wait until I get back to the states. Is there anyway for me to al least get some of the stuff off of my harddrive--that's all I really care about? Obviously, there isn't an apple store here in Dakar, Senegal, for me to take it to--although there are a few computer places but it seems like Apples aren't too popular here, and so I'm not sure how effective/knowledgeable they'd be with a Mac. Plus I'd have to explain all of this in French, which wouldn't necessarily be the easiest thing.
Thank you sooo much,
Chris
And for my operating system, I'm not sure if I clicked the right one, but I know I'm on one of the newer ones (not the newest though)
iBook 12" Mac OS X (10.4.3) bought in 2002
iBook 12" Mac OS X (10.4.3) bought in 2002

Hi, Chris. Welcome to Apple Discussions.
It sounds like you may be having logic board problems. Enough Dual USB G3 iBooks suffered from this problem that Apple began the iBook Logic Board Repair Extension Program in January of 2004. Check out the FAQ page and if the symptoms look familiar, give Apple a call.
Since it is past the three-year time limit, try calling and ask for Customer Relations (NOT Customer Service--they can't help you) and ask them to please make an exception to the three-year limit in your case.
You may want to consider trying the shim fix suggested by John Sawyer elsewhere here in the Displays Forum:
[Y]ou can often fix this yourself by removing the iBook's bottom housing, and placing a shim of any sort, about 1mm to 1.5mm thick, onto the raised square on the bottom shield. I use a Scotch mounting square--you can get them in hardware stores and many grocery stores. When you reinstall the bottom case, it will press against this shim, which will press against the graphics chip, and may allow the chip to come into better contact with the logic board.
John Sawyer
CJS Macintosh Repair
Instructions for removing the lower case:
http://www.ifixit.com/Guide/50.5.0.html
Once you get it fixed, try never to pick it up by the left front corner alone. Rumor has it that can contribute to logic board failure when the case flexes, causing the graphics chip to come loose from the logic board. If you're picking it up in your left hand (as I often do mine), pick it up in the center under the trackpad.
Good luck. Let us know how things go.

Startup sound heard continuously

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