Windows XP Profesional
1 GB RAM
nVidia GeForce 4
Intel motherboard and P4 CPU
After character has been created. Every time the world (tutorial world) has just finished loading the PC immediately reboots (black screen then BIOS begins loading) and BIOS gives CPU temperature warning. Require F4 to be pressed to resume. I also monitored the CPU temperature and it is staying cool all the time. Even with the Task Manager running when running the PS client, the CPU does not even get to 50% usage until system shutdown upon world finished loading. Shting down windows normally does not result in any CPU warnings.