Hi, Just recentlybought a reworked old machine with full version XP Pro. Now when I install NOD32 it alerts for MBR, physological device 1 probable TSR.Boot record (7) What´s this and how is it possible when it´s a "new" machine that has been totally wiped by the manufacturer? Question 2 Does this probable TSR.BOOT virus spread through network connections to other computer. When found the computer was connected to our company LAN. Please if possible provide info, urgently Best regards Patrik