Shoutbox

i am using a 80 GB Seagate serial ATA hard disk, and it was running fine till a few hours earlier, after i installed a fresh copy of windows xp on it two days back. but all of a sudden, it restarted and now, i am getting a "error 115" before boot, and i am redirected to BIOS setup. i get the error even when i set the primary boot device as the cd rom. please help me with this. do you think reinsalling windows will help?
please help me out.