I recently put together components from two computers, trying to make a bigger and better computer using two IDE hard drives and a SCSI.  I tried copying XP from the smaller IDE hard drive to one of the bigger ones, since you can only have two IDE drives on a ribbon, and everything seemed to work fine.  When I removed the smaller IDE, and replaced it with a formatted larger one, I started recieving error messages, and was never able to resume windows.  I tried formatting all hard drives to start from scratch, and then reloading XP, but now when I try to start, I get the message: NTLDR is missing.  The only windows disc I have is a copy of the original XP disc, which apparently doesn't contain the booting programs.  My sister found the NTLDR FILE on the internet, which I put on a floppy and tried booting with, but this didn't work.  What can I do, or do I need to format the drives and get an original copy of windows to boot from? Thank you for any help you can give me.Have you changed your BIOS to boot off the CDrom FIRST?or try this >http://support.microsoft.com/default.aspx?scid=kb;EN-US;q310994As I had ALREADY changed the dos to boot from the cd-rom with no luck, I downloaded the startup from the internet onto a cd-rom, as I did not have a floppy LARGE enough to fit the startup, and it said it could not find the boot record, then went on to say NTLDR is missing.  Will using the original Windows XP cd allow me to resolve this problem and get into windows?  Thank you for your help.try the repair OPTION>http://support.microsoft.com/default.aspx?scid=kb;en-us;315341&Product=winxp