The password is usually the return key.
Repair of the NTLDR missing has been discussed at length before as you can review at http://cma.zdnet.com/texis/forums/search.html?q=&qt=Ntldr+missing
I have a machine with xp home on it that is coming up with "Ntldr missing" at boot up. I have tried to boot from the CD but it asks for a password and I don't ever remember entering any.
I pulled the HDD and slaved it into an xp pro machine and did a scan for viruses. I also tried to replace ntldr and netdetect.com from the original cd. It didn't work.
Is there anything else that I can do short of reloading the OS? The drive seems to work well as a slave.