ok... i'm not so familiar with the technical aspects of computers... :confused: my computer restarts on it's own. it seems like it does it when i run multiple applications, or one app with a lot of info to load (sims, for example). it's quite frustrating. all i can tell you is.... it's an hp pavilion a420n, about 3-4 years old, windows xp. that's it. that, is the extent of my knowledge. Please help! and use the simplest instructions possible :cheesy: THANK YOU!