I recently added another 512MB RAM (PC2100 DDR 266 DIMM), for a total of 1GB RAM (2 x 512 DIMMs). XP is generally stable most of the time, but it restarts sometimes on it's own. I had this problem with another Gigabyte board but worse (would not even get to logon screen, just restarted in a loop). Since the board change to a GA-8LD533 Intel 845GL chipset Intel P4 1.6 GHz CPU(Gigabyte), XP has been more stable, but still restarts on occasion. I removed one of the DIMMs now, because the system would restart every time I tried to go to my on-line banking website (go figure ??). I have all the XP patches and IE patches available ... I've tried new drivers for video and audio with no luck ... any help on how to stabilize XP on my system with 1GB RAM??