My CD drive keeps making strange noises when macbook first turns on or wakes from sleep

Any ideas?

It started a few months ago, but I got the macbook about 3 years ago. It seems that it doesn't make noises when there is a disc inserted, but when it's empty it does (very embarrassing in a quiet library!) - it's almost like it's satisfied when full of food, but it rumbles when it's hungry. Any ideas?

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My macbook (2009) keeps making strange noises. What to do?

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I called Apple Support, but they told me i had to reset the SMC and PRAM/NVRAM. I triend, but the noise is still there.
Does anyone know what to do?? Is it bad?
Its a really annoying sound.

It could be the fan.....or the hard drive.....this is a link to a data recovery firm that has posted the various sounds made by failing hard drives.......
datacent.com/hard_drive_sounds.php
......make sure your data is backed now in case the hard drive is failing.....

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I am experiencing a really weird problem on my month-old Mac Pro. Whenever I put the computer to sleep, and subsequently wake it up, I get troubled by weird beeping noises coming through whatever headphone/speaker is plugged in to the front headphone jack. These will seemingly randomly occur in either the left or right speaker.
The weird thing about these beeps is that they only occur after a sound has just stopped playing (doesn't matter the source, it can be after a system sound, a new mail sound, after playing a song in iTunes, ...), but they don't appear after every sound. What I mean is that I can play the same sound 10 times over, and the beeping noise will or will not occur completely randomly. Now normally the beeps are very short (and slightly annoying), but sometimes this beep will keep on beeping at a constant tone. The only way to get rid of it (temporarily) is to play a sound through the headphone/speaker, for example by increasing the volume so that the little 'tick'-sound plays or by dis- and then reconnecting the headphone/speaker.
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There doesn't seem to be any constant factor in this behavior, except that it only occurs after waking the computer from sleep. By now I have already had the front panel replaced, as the Apple reps thought it might be a faulty headphone jack, but to no avail. The matter is ofcourse complicated because I can't reproduce the problem on the fly, because of the random occurences, thus making it hard for the service people to actually get an idea what might be wrong.
As I don't feel like missing my computer again for a while, i thought I'd ask the collected wisdom on this forums if anyone has experienced a similar problem and, if that's the case, if they were perhaps able to find out what the exact cause of this behavior was?
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Ah bummer (and here I was hoping it could be easily solved) .
I'll still try a fresh system install in a few days time, to make absolutely sure it isn't software-related (against better judgement perhaps in the light of your findings, but at least I'll be able to tell support its definitely not an sw problem). If indeed the problem persists I guess there won't be any other choice than to contact support again (But since I can't afford the computer not to be available for the coming 2 months I guess I'll have to bear it for the time being, which in turns also means I won't be able to let you know if it got fixed until I'm able to bring her in).
Oh and fyi, I also have a second hard-drive installed (Seagate Barracuda 500Gb, same as the factory installed primary one), but that cannot be the cause of the beeping, as I actually bought it because of this problem (to backup my important files while my Mac went in for service the first time). So we can't blame these poor drives for our problem .
Anyway, definitely thanks for chiming in (makes me feel a little bit better knowing that I'm at least not the only one experiencing this annoying problem, although obviously I wished I shouldn't have to feel better about this ) and I'll keep you updated on any further steps made towards solving this problem, even though it may take a while as explained above.
Cheers!

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that's really unfortunate. coming from pc side of computing, i don't recall such an awful sound when booting up laptops tha t had similar drives.
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My CD drive keeps making strange noises when macbook first turns on or wakes from sleep

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