Change from 32 bit to 64 bit

I had a full licence (not OEM) of Window 7 Home premium. And I have upgraded to Window 10. Now I have put in more RAM to from 4 to 16 Gb. How do I reinstall a 64 bit Window 10?
Would appreciate your input


Daniel, Toronto

Download this and run it, use it to upgrade. This is a clean install which will delete all files so do a backup.

You need to make a Windows 10 install USB or DVD using the tool in post #2. Boot the computer from the USB/DVD and do a completely new install of Windows 10 64-bit.

Thanks. That seem to be the right disc.

Daniel