got asked to upgrade windows 7 too 10. i did soo..it messed my computer, i tried to fix and failed.. i formated.. tried to install win xp..said msg is missing..tried with my burned wins 7 cd(i have a legal sticker of windows 7) everything went fine until got asked to create a partition by pressing letter C, when I press on key C, nothing happens.. is it possible to create a partition in another way? or any other solutions?

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