I have spent a long time not paying attention to the evolution of computer hardware, and now that negligence has caught up to me. A year ago, a friend helped me upgrade my system, and due to an oversight by both of us, we ordered a motherboard with only 2 RAM slots. As I had 4x1GB sticks, he offered to trade me for 2x2GB that he had. The RAM he gave me was abysmal. I ran a memory test and discovered that one stick was almost apparently almost completely worthless, and the other was showing signs of...something. I don't know or remember what, because I didn't understand it. What I did understand was that I needed new RAM. I initially started by searching for the cheapest 1x2GB RAM I could find, and so far it has left me wanting.
What I am requesting here is a little guidance toward re-making my system into the moderately satisfying gaming rig I had before. While I do enjoy gaming, I am not a hard-core night owl needing the absolute best. I will settle for mediocrity.
Thank you in advance, and here are what I believe are the relevant system specs, according to CPUZ.