How to change the 32-bit 32-bit win7 system to 64-bit

How to replace the 32-bit win7 system into 64-bit: Recently, I saw some comments on the Internet, how to change the 32-bit computer 32-bit, of course, for the computer More familiar friends will find this problem somewhat strange, but for many beginners this is indeed a question worth answering. For example, some users ask: the 32-bit flagship win7 is installed in the computer, and the home computer memory is 4G. It is said that changing to 64-bit can improve performance, how to replace it?

In fact, 32-bit to 64-bit is not just a so-called digital change, not to change the 32 in the system to 64. The difference between 32-bit and 64-bit systems is not just the change in numbers, but the difference in the kernel. Therefore, now everyone should be able to understand that the 32-bit win7 system can not be directly replaced by 64-bit win7, but need to re-install the operating system, it is like replacing xp with win7 is the same reason.