NTLDR is missing.

Im not sure where I should post this, but Im going to try here.

When I start up my computer, I get that error:

"NTLDR is missing, Press any key to restart"

I have no clue what it means, does anyone else? I get the error like, RIGHT before you sholud see the windows screen.

This is a computer Im building with parts I had layin around, heres the components:

A7V8X - XP 1800+ - 256 Crucial PC2100 - Fortron350W - Old Omega Fireball HD (I think omega?).

Thanks.

---EDIT---

Nevermind.. Im sorry, I should have searched for this before I posted. After looking, It looks like I just need to format.

Well you can copy the NTLDR file from the i386 folder back to your HDD instead of formating. Boot into safe mode & get to a command line then go to your optical drive X:\i386\COPY NTLDR C: & you should be back up & running in no time. Granted the original install was done on that particular system if not just do a complete format & reinstall.