When GRUB stage1 runs but stage2 never does for some reason, you will see "GRUB _" with the underline blinking in the upper left corner of the screen. The system is frozen and can only get out of this by restarting. It's fairly common and has various causes such as switching BIOS drive order or cables after installing, corruption of stage1.5 or stage2 or faulty installation of GRUB in general, BIOS settings related to hard drives. Sometimes the installer just gets confused installing GRUB.
It can usually be corrected by just reinstalling GRUB using the installation disk in rescue mode. But before you do that, can you reply with more detail about things like your drives (how many, SATA, IDE), other OSs present (which OS is on which drive, the current drive order in BIOS), where you think you chose to install GRUB during the installation. After things like that are more clear, you can then confidently issue the GRUB reinstall command and probably fix this tonight.
Can't hang around tonight. If you know that you want GRUB installed in the master boot record of your only or first hard drive. If you know that you want GRUB to be the boot loader for Fedora and any other operating systems that may be on your system. Then you can reinstall GRUB in the master boot record using the following command. If there is something about your hardware or other operating systems that make you unsure about any of that, then stop and explain more about it.
/sbin/grub-install --recheck /dev/sda
- Boot with your Fedora installation disk.
- Select Rescue installed system
- Follow directions & respond to prompts (answer "No" to network).
- When you reach the sh prompt, enter: chroot /mnt/sysimage
- At the sh prompt enter: /sbin/grub-install --recheck /dev/sda
- At the sh prompt, enter: exit
- Enter exit again to reboot.
- Remove the CD or DVD.