I consider myself computer literate. I can fix most minor problems that come up, or at least circumnavigate them. I’ve had my desktop PC for five years now. Its configuration is a 2.6 GHz Pentium IV, I’ve upgraded to a gig of RAM, and I have 2 separate internal hard drives totaling 100 GB, and an additional 120GB external drive. I run a GeForce FX 5200 128MB video card with duel processors on it. Over all it’s a pretty sound system, and rarely gives me trouble. Recently I’ve been having problems with it locking up, programs suddenly shutting down with no warning, I have big problems with images sticking or trailing if that makes sense? Like I’ll minimize something and the image of what I just had up sticks to the desktop either temporarily or permanently. The other day I had a blue screen pop out of no where saying it was doing a physical memory dump and had a timer next to it. What I’m trying to get at is I think it’s about time to get a new, bigger internal hard drive or reformat. I know little about reformatting. I’ve always been scared to attempt one. What do I need and how do I do it? I know basics and I've seen my dad and friends do them, so I have an idea... I guess I need some kind of check list of what to do.