What is grinding sound on my iMAC

I had my hard drive replaced and upgraded my desktop to snow leopard. Since then the computer has a grinding sound coming from it. The spinning ball of death appears frequently dispite taking actions to clear cache, etc. Am I doomed to need to replace more of the 4 yr. old computer?

Sounds like your new hard drive is dying. This does happen. Call the vendor from where you got it and ask for a replacement.
Allan

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27 Inch iMac 2.8GHz i5 (Mid-2010) Grinding Sound.

Hi, I got my iMac as a replacement last year and it's just started making an intermittent grinding sound. It's never when doing anything specific. I tried to make it make the sound by rendering a video, doing a disk speedtest and nothing happened which has just confused me. I'm usually pretty good with computers, building PCs and repairing them but I have no idea what is going on with my iMac.
Stupidly and because of money problems I couldn't get Applecare so it's 8 months out of warranty.
Has anybody had any issues like this with their iMac, if so what was it that was wrong? I've not had the best of luck with Macs and it's getting annoying that they always break on me. Thanks in advanced!
Benjamin

Thanks, I have regular Time Machines backups so I'm not too concerned about that. It doesn't get louder under load and I've used SMCFanControl to put the 3 fans up 1 at a time and the noise didn't increase or start which leads me to believe it possibly is the Hard Drive. I can't get into AHT for some reason, It worked before updating to Mountain Lion and now I can't even get on to it using the Snow Leopard disk.
I think I could try taking out the Hard Drive and run the drive in an enclosure just to see if the sound will start in one. If it does, I guess that's the easiest thing to replace and might be a good idea to go to an SSD at the same time.
I'll try to explain the sound in more detail. At random times a noise would start and within 2 or 3 seconds it gets to about the volume of the fans at max, when at the peak volume the sound is like an angle grinder grinding metal then it just fades to nothing and the iMac sounds just like normal except for a slight whine from one of my fans that is inaudible unless I put my ear to the machine.
I hope that was enough detail, it's somewhat hard to describe.
Thanks again!

What is that loud 'tok, tok, tok "sound in my iMac?

What is that loud 'tok, tok, tok "sound in my imac? It will sound when the computer boots, and sometimes when the machine is turned on. Should be sent directly for warranty service?

This could be the internal Hard Drive being a bit loud when it starts up or it could indicate a potential hard drive error.
If you check the S.M.A.R.T status of your drive in Disk Utility it should give some indication (but not always).
If the system works fine it's probably nothing to worry about, but you should probably speak to Apple Tech Support or make an appointment with an Apple Genius at your local Apple Retail Store just to be on the safe side.
If you have an external drive available to you, make a back up of your system (so you don't loose anything) in case the drive does need replaced.

What is that loud, grinding sound?

Had my computer, MacBook, on all day. Connected to power all day too. Later, about early evening, the house was a little warmer and I tried to put MacBook to sleep when a very loud, almost grinding sound was coming from the laptop. It almost seemed like the sound was coming from the battery compartment but not sure. It was not a drive sound, nor fan sound, or CD drive sound, nothing like that- much louder and nasty sounding. So has this happened to anyone else and does anyone know what this could be? All help appreciated and welcomed. Thanks

This could be the internal Hard Drive being a bit loud when it starts up or it could indicate a potential hard drive error.
If you check the S.M.A.R.T status of your drive in Disk Utility it should give some indication (but not always).
If the system works fine it's probably nothing to worry about, but you should probably speak to Apple Tech Support or make an appointment with an Apple Genius at your local Apple Retail Store just to be on the safe side.
If you have an external drive available to you, make a back up of your system (so you don't loose anything) in case the drive does need replaced.

HT1338 HOW CAN I SPEED UP MY MAC IT HAS A GRINDING SOUND AND THE COLOUR WHEEL SPIN AND FREEZES

MY IMAC HAS A GRINDING SOUND AND ITS SLOW, THE WHEEL START SPIINING AND IT FREEZES I HAVE TO TURN IT OFF AND ON AGAIN , WHAT IS THE PROBLEM AND HOW CAN I SPEED IT UP AND GET IT TO RUN FASTER?

Does the sound appear to be from the hard drive, such as when you do any work (which means the hard drive is being written to)?
Have you received an email from Apple about their Seagate hard drive recall (for certain iMac models)? Check to see if yours is affected here:
http://www.apple.com/support/imac-harddrive/
In any case, a grinding noise is what I had, followed by other very strange behavior and the diagnosis was hard drive failure. So, whether you are covered or not, I would strongly suggest that you backup all your data as quickly as you can and - if you're not covered by warranty or the recall - book an appointment at your nearest Genius Bar for a diagnosis.
Also, please do not use all caps - difficult to read and it's considering shouting on the internet.

Nokia lumia 1520 loud speaker grinding sound and w...

hi,
my nokia lumia 1520 has been making sound grinding sounds which can only be heard if you put your ear close to the loud speaker. i emailed the company that i bought the phone from and this is what they said:
"for this type of issue, you can do a Master Reset on your phone (please take note that by doing this all of your data will be erased). If the problem persists, kindly go to your nearest Nokia service center to have it checked. If it's still under warranty, any repairs will be free of charge. If it's NOT under warranty, please get the code from the service center and forward it to us through [email protected] so we can review the charges (subject for approval) and give you a refund for it."
i did as they said but when i went to the nokia care centre, since i live in uk and the phone is from dubai they said that its out of warranty so i asked them for a code as the company said to me but nokia care team had no idea what i was talking about. i showed them the email and nothing
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Hi thedeepsleeper,
Welcome to the Nokia Support Discussions!
Are you still having an issue with your Lumia 1520? If yes, did something happen to your phone prior to the issue? What troubleshooting steps have you tried so far? Does it happen only when you put it on a loudspeaker? How about when connecting your earphone to your phone?
If you would like to send it for repair and since there's no international warranty, we suggest sending it to a Nokia Care Point in Dubai instead. To know more about the difference between the warranty in the UK and in Dubai, see these links:
http://www.nokia.com/gb-en/support/manufacturers-limited-warranty/
http://www.nokia.com/ae-en/support/manufacturers-limited-warranty/

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<Edited by Host>

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Thx your questions helped me find the solution. In the input source was should EDIROL stereo 1/2, which I thought meant 2 channels, but it actually means the channels on the edirol. The drop down box also should channel 3/4 and that is where MD is connected. I works now.
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I

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What is grinding sound on my iMAC

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