Boot troubles after installing Win2K

Hi,

I recently installed win2k pro on my pc. It had xp on it
but i chose option to wipe clean and install win 2k.
Since doing that I am having trouble booting. The PC
seems to hang on the win2k logo screen on bootup and does
not boot up at all.

Would anyone have any ideas as to why this is happening
and what I could do to fix.

....Bruce