I am having the Compaq Desktop computer system which has the Windows 7 operating system. But i am currently using the 32 Bit version of the Windows 7 Operating System. Now i want to install the 64 Bit version of the Windows 7 operating system. When i am installing the 64 Bit version of this OS the installation procedure hangs about completing 10% only. So i think there is a problem in installing Windows 7 64 Bit on Compaq desktop. How can i install the 64 bit Windows 7 OS in this desktop without any problem.