
When I was doing research on compatibility issues etc., I noticed that my computer was only using 2.98 out of the 8GB of installed RAM. When Windows 10 was released, I considered upgrading. This hasn't been much of a problem (I didn't notice until recently), so I continued to use the 32-bit windows. However, for some dumb reason, I installed 32-bit Windows rather than 64-bit. It came installed with Windows 7, which I wiped quite a while ago, and installed Windows 8 Pro when it came out. I own a reasonably good computer which is capable of running a 64 bit operating system.
