UNE 0 Light Poster

As i was working, power goes off and my PC restarts and BOOT.INI thingy came up... i do have any idea how to fix it other then format it.. i have tried with Repair XP but no chance i have run the CHKDSK /R still nothing.. is there any one who can help me resolve this problem before i do something stupid to my PC and lose everything in it.. If YES please hurry up and help me coz i need my PC so bad now a days...

Thanks in advance