Ok I have a computer I put together my self and my main hard drive had Windows XP and my other hard drive had a beta version of Windows Vista, I tried to set up a dual boot thing but it never really worked. I took out the second hard drive (with Vista) and now when I boot the computer it still goes to the OS selection and it has Windows XP and Windows Vista but no matter which one I choose, the computer reboots and does it all over again. Was I supposed to change something when I took out the second hard drive?

Hi
Sounds like the ntldr & ntdetect files are on the hdd you have taken out these files are needed to boot the o/s the reason you are getting a menu is because the boot.ini file is the drive copy the 2 files listed above to the drive and see if it works.