How to solve GRUB error

1) Boot the pc with Linux cd 1
2) Type linux rescue
3) Follow the screen step
4) Command prompt: type chroot /mnt/sysimage
5) Type df -h to find where the linux is installed
6) Type grub-install /dev/hda
ex- the linux patition could be hda,hdc,hdb. it is depend where the linux is been installed.

Note- Once the above process complete you will find following message in the screen
"no error reported"
7) Type exit & take the cd out from cd rom
8) Type exit to restart/reboot the pc