The cpu in the computer must be capable of running 64 bit platforms. If your cpu is not 64 bit capable you will not be able to install a 64bit o/s. There is no upgrade from a 32bit to 64bit, it would have to be a fresh install which means you need to save any needed data before hand.
The information on Computing.Net is the opinions of its users. Such
opinions may not be accurate and they are to be used at your own risk.
Computing.Net cannot verify the validity of the statements made on this
site. Computing.Net and Purch hereby disclaim all responsibility
and liability for the content of Computing.Net and its accuracy.