Computer wont boot?

okay yet again i manage to mess up my computer. after 1 day of trouble shooting ive given up and ive formatted all my hard drives and started fresh with a install of vista.
one would think it would boot up… no i keep getting the same boot error.
windows fail to load because ntoskrnl.exe failed to load…
i dont understand why this is saying this when i just whiped all my drives and reinstalled windows. ive googled it and it doesnt seem to help.