i have windows 7 64 bit running and installed.. when i tried windows xp 64 i kept getting blue screen right after driver installs and getting ready to load windows partion manager for install partion destination. so i ran virtual pc loaded the img and it says my machine is not 64 bit i have a dell xps 720 orig vista 64 bit in install cds from factory
If I am understanding you correctly, you are trying to install Windows XP 64 bit in Virtual PC? That is not possible, as it will only accept 32 bit OS.Windows Virtual PC: FAQ
Does Windows Virtual PC support 64-bit Windows XP as a guest operating system?
No. Windows Virtual PC and Windows XP Mode was designed to help small business with application compatibility from Windows XP to Windows 7. The majority of business applications currently run on 32-bit versions of