IMO, a good idea for this situation is to download and create a Super Grub Disk (get the one for GRUB, not GRUB 2
). It's a free and popular utility that you can use first to emergency boot the Fedora system (choose !LINUX!
in the Quick Menu) to confirm that its going to boot, work, and make you happy before you change your main boot loader. Then you can use the Super Grub Disk to install GRUB in the master boot record (choose GRUB => MBR & !LINUX!
in the Quick Menu). After that, GRUB will launch directly from BIOS. From the GRUB menu you can boot Fedora and probably Windows (choose "Other" in the GRUB menu). If there is no entry for Windows, or the one there doesn't work, then an easy tweak to the GRUB config file usually can fix that.