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I have a DVD Writer Sony 870s. It was working alright earlier, Now (may be after new motherboard) its not writing DVDs correctly. The problem is that after I burn a DVD the DVD surface is not burned consistently, I can see shaded rings, see the attached image for description. enter image description here

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And do your DVDs validate and read fine? – slhck Aug 7 '11 at 12:09
    
DVD writer software like powerISO, imgBurn reports thats DVD burned successfully but I am not able to ready it properly. I am creating windows dvd clone and its not booting.. – coure2011 Aug 7 '11 at 13:01
    
Found! I need to write DVD at 16x. – coure2011 Aug 15 '11 at 16:47
    
Ah. Well, post it as an answer, you can then accept it in two days! – slhck Aug 15 '11 at 17:23
up vote 1 down vote accepted

Ok I Found the solution. I need to burn it at maximum speed (16x). Not sure whats the science behind it.

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