Why cant i get my 32 bit computer to load the 64 bit windows i just bought

[jonathanclee]

Hello, so I upgraded my computer to windows 7 32 bit, went out and bought the 64 bit full version but cant get it to load, what do I need to do?

 

[danny2000]

Are you certain that you processor supports 64-bit operating systems?
You need to do a clean or "custom install" by booting up with the DVD. It will erase everything.

 

[scout_03]

need to format to install the 64 version wont go from 32 to 64 directly