Elios05 :
Corwin65 :
Upgrading to a 64 bit OS, which you will need to purchase, will only help if you are adding more than 4GB of memory.
With your 4GB of RAM it won't help.
What do you mean? I've seen 64 bit computers that run only 4 gbs of ram
Just because they can doesn't mean that they run well. MS specifies that the bare minimum for W10 is 2GB RAM, but the current standard for 64-bit systems is pretty much 8GB RAM. Anything less than that and you're going to potentially have a less than stellar experience with performance issues.
https://www.microsoft.com/en-us/windows/windows-10-specifications#system-specifications