Sound Problem,Disk Drive,Folders

While you are opening any file/folder during playing of CD/DVD u r feeling turbulence of sound.To avoid follow d given steps

Open Device Manager
-IDE ATA/ATAPI controllers
-Primary IDE channel
-Advanced Settings
-Transfer Mode(Both)
-select DMA if available

Do d Same in secondary IDE channel

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To Change Drive Letter:

Go to

Control panel>admin tool>computer management>disk managmnt>right click d partition whose name u want 2 change

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Folders

Device names such as COM1, CON or LPT1 are reserved words, and they can't be used as folder or file names.