After running my compuer under Windows XP Professional x64 edition for a year, I decided to install Windows 2000 so I could play an old game or two that would not play under 64-bit. Now, I am not able to boot onto XP 64-bit edition. The name of the operating system does appear on the boot menu. But when I select it, Windows 2000 takes over and tells me that it cannot find the kernel.exe or that it is corrupt. Of course, I am able to boot perfectly onto Windows 2000 when selected from the menu. Could someone tell me what to do next in order to be able to boot onto x64 again? Thanks in advance for whatever feedback you can give me.