NTLDR

Hello,
i have a problem with my pc..an error message saying
NTLDR missing
press CTRL+ALT+DEL to restart...
restard dosent work...i've tried many ways to avoid the message.
But none worked. so i thought of reparin the pc. but it dosen't work either. Its my offc Pc, my all data's are safely in D:/ drive and in the server too. I dont want to setup windows xp again..because i'll have to install all softwares nd add my pc again to the domain. It will take too long to do it...Now am working in a laptop...but want data's in D:/...
Pls Give me an advice...Am a IT engineer...(Trainy)