Alright, I think your computer has a floppy drive. So what you can do is, find another computer with windows XP installed, that also has a floppy drive. If it's a usb floppy drive that's fine.
Log onto the computer as administrator. Open a command prompt and type:
attrib -h -r -s c:\ntldr
press enter
Then go to the root folder of the C drive ( C:\ )and locate "ntldr"
Copy and Paste it your floppy disk..
Take the floppy disk over to your problem computer and insert it into the floppy drive.. Boot up the computer and your computer will load ntldr, then load the rest of the Operating System, assuming that all other system files are intact..
This will only work if you computer is set up to boot from the floppy drive..
Once booted up, copy and paste the ntldr file from the floppy drive to the root of C, so the next time you boot, you won't need the floppy disk..
