Boot Manager uninstalled?

[Guest]

Ok so I attempted to install vista over windows xp pro, and it didn't install
properly (I had installed windows xp pro as a second os on my comp, will
preserving the original os of XP Home edition which came with the computer.)
When I rolled the software back the program restarted and the boot manager
didn't exist, the comp said "Bootmgr not present press any button to reboot."
I then reinstalled vista directly. Before I reinstalled vista I attempted to
reinstall xp pro but it refused to boot from cd. Why did it do this?

 

[Rob]

I had to use VistaBootPRO 2.1 to get rid of the vista boot manager and reset
xp as default.

 

[John Barnes]

VistaBootPro, EasyBCD and the XP Recovery Console are the best ways to
restore the XP MBR