ntldr errors

Built my first home pc and ran into this error right after the bios loads. Hit the cntl-alt-del and it takes me into a big loop of rebooting. What Ive read about this error is it happens alot when a o.s. is upgraded. Im not upgrading at all. No other o.s. has been downloaded. The day before this happened I had made it all the way to the windows xp ula agreement. I couldnt get the F8 to register because of the F lock key that I didnt realize that I had. Shut it off and the next day had this error. Cant get passed it. Any help would be appriciated. Sarcastic remarks not needed though. Thanks….