I am having a problem with our E5615 PC’s (running XP Professional SP2) rebooting after we install a wireless network card (Linksys WMP55AG ver. 1.2). This even happens after we go into the BIOS and disable the power over LAN setting. Tried upgrading the BIOS with no effect. This only seems to be a problem with this make and model of computer, does anyone know how to rectify this problem.