I'm willing to do whatever I can to optimize it so I can run any source game. My system randomly crashes when I run the Source engine. In HL2, it's playable, but randomly crashes, and always crashes when loading. Portal crashes when I go through a portal, and sometimes when I look at a portal. TF2 just gave me a blue screen after getting ingame for 5 seconds. I'm very sad, as new computers ALWAYS kick more ass than old ones (except if you have Vista), and this is redicolous. So, what should I do to optimize?
EDIT: I just realised that it's Dual Core. I heard that's a big no no. What should I do now?