As I understand the sentence you are trying to do something which cannot be done.
If what you really mean are: I am using DVD containing the KDE ISO to install Manjaro - then I suggest you read the following topic
Very important:
Verify your Windows installation type - is it BIOS/MBR - is it BIOS/GPT or is it plain EFI/GPT.
This is not a flaw of Manjaro but important to know because Manjaro needs to be installed using the same mode - and it is not always obvious which mode to use.