problem in booting fedora core

[RAVI GUPTA]

RESPECTED SIR 
          I AM STUDENT OF INFORMATION TECH. AND I HAVE BOUGHT A NEW PC HAVING FOLLOWING
CONFIGURATION:

INTEL D915GAV MOTHERBOARD
INTEL 3.0 GHz PROCESSOR
512 MB RAM 
80 GB HDD

PROBLEM 1:
          WHEN I INSTALLED FEDORA CORE-2 THE WHOLE INSTALLATION WENT SMOOTHLY BUT AFTER
THE COMPLETE INSTALLATION WHEN REBOOTING WAS DONE THE SYSTEM SHOWED BOOT LOADER ERROR AND
WAS UNABLE TO DETECT HARD DISK. AFTER  MAKING CERTAIN ARRANGEMENT IT RAN ALSO BUT DURING
BOOTING OF LINUX IT SHOWED UNSUPPORTED CHIPSET. AND THEN AGAIN AFTER RESTARTING THE
COMPUTER IT AGAIN STARTED SHOWING BOOT LOADER ERROR.

PROBLEM 2:
          AND THEN WHEN I INSTALLED FEDORA CORE-3 AGAIN AFTER INSTALLATION WHEN I REBOOTED
THE SYSTEM MY SYSTEM KEPT RESTARTING AGAIN AND AGAIN AND FINALLY STUCK TO SCREEN
DISPLAYING :

GRUB Loading stage 2 .....
-

        ALL THE GOOD AND INTELLIGENT PEOPLE PRESENT THERE PLEASE HELP ME OUT I AM REALLY
IN BIG TROUBLE AS OUR INSTITUTE REALLY BACKUPS ON FEDORA CORE LINUX OPERATING SYSTEMS.
          WAITING FOR REPLY.

YOURS SINCERELY,
RAVI KANT GUPTA