I am running XP and when I setup my UPS (Battery Backup) in the "Power Options" (I use an APC 500 battery backup) it causes my computer to shut down. And when I reboot it immediately shuts down after reboot is complete. I reboot again and the same thing happens. I had to boot in safe mode and change the settings back to "None" in the Settings of UPS. Anybody know why this is happening? Is it even necessary to set that up in the "Power Options" settings? It seems to work just fine with it set to "None". Thanks in advance.