Help! CDs burnt with PC suddenly not readable!

Hello,
I've suddenly come across a problem, which I'm not sure I understand at all... My Macbook Pro has stopped being able to read PC burnt data CDs. CDs that have previously worked. I get the "The disk inserted was not readable by this computer" error. They work in my old PC laptop, BUT, I booted up in Boot Camp on my Macbook Pro and it only saw the CD as a blank CD, so I'm guessing it's not an OS problem.
Just to make things even more clear, PC burnt audio CDs STILL work, and Mac burnt data/audio CDs still work. So it also doesn't seem to be a problem with the optical drive itself.
I posted this here because I think it's as relevant to... everything else as much it is to just the "optical drive" section. Seeing as some CDs still work.
I'm a bit miffed...
Cheers for any help.
Louis

I have the same issue, a CD I just got with some images doesn't read on my iMac or my MacBook Pro. I just get the message: This CD is not readable or something similar.
I see a lot of people with the same issue but no answer.

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    Hello,
    I've suddenly come across a problem, which I'm not sure I understand at all... My Macbook Pro has stopped being able to read PC burnt data CDs. CDs that have previously worked. I get the "The disk inserted was not readable by this computer" error. They work in my old PC laptop, BUT, I booted up in Boot Camp on my Macbook Pro and it only saw the CD as a blank CD, so I'm guessing it's not an OS problem.
    Just to make things even more clear, PC burnt audio CDs STILL work, and Mac burnt data/audio CDs still work. So it also doesn't seem to be a problem with the optical drive itself.
    I'm a bit miffed...
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    Louis

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