Quote:
P.S: I don't to use a CD or a LIVE USB!
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Does that mean you have the Fedora iso (very poor choice of a distribution for someone new) on your hard drive somewhere?
Well, you obviously can't boot it from windows so do you still have the Ubuntu grub2 on the machine?
Highly unlikely you will be able to boot Fedora directly from an iso file and grub unless Fedora has changed recently.
Maybe you could give more specifics on exactly what you have tried and what you want to do.