No GRUB after re-installing Windows

Solution 1:

You will need to reinstall grub. Here a couple other questions that should help you out:

• How to fix GRUB after Windows breaks it, and how to edit the GRUB menu
• Repair grub mbr and /boot using ubuntu 9.04 live CD
• Windows 7 upgrade and Grub boot loader

Solution 2:

If you installed Fedora from a cd and it has live capabilities you can boot into the cd and repair grub via that. When you install windows it replaces the boot manager with its own.

You can check out this as well

Solution 3:

Download, burn to cd and boot from the .iso available at supergrubdisk.com - it will find your previous grub and reinstall it.