I have a custom built desktop and upgraded a couple months ago to Windows 10 32-bit, without realizing I can't use my RAM to it's full potential (16GB is what I have installed). I have researched online and it looks like you can download the Windows Media Creation Tool and use it to switch from 32 to 64-bit. I talk to my friend who built my computer and he said to buy a brand new 64-bit code and do a clean reboot/install.
Either way, I'm terrified to wipe my computer (Everything I have (photos, music, files, etc.) is stored on one of my external hard drives.) but my question is - can I use the Windows Media Tool? Is this a legit way to switch/upgrade?