WINDOWS 2000 BLUE SCREEN

I HAVE BEING USEING WINDOWS 2000PRO A WHILE NOW BUT SADENLY IT HUNGED MY PC AND I RESTART , BUT UT WOUNT BOOT TO DESKTOP, THATS THIS BLUE SCREEN KEEPS APPEARING AND STAKES THERE WOUNT GET TO DESKTOP. PLEASE IS THERE ANY WAY TO RECORVER THE SYSTEM APART FROM FORMATTING THE HDD?. I TRIED TO BOOT TO THE SAVE MODE AND STILL I ALSO TRIED TO BOOT TO THE LAST KNOWN GOOD CONFIGURATION BUT ALL IN VAIN.