To be on the safe side, I always carry the machine with me, and have decided not to let my home laptop go online. I disabled all network-related functions in the bios (wf, LAN, Bluetooth etc), disabled network adaptors, disabled lots of things in the “services” (network connections, workstation, browers, wf), turned off folder/printer sharing, added new inbound and outbound rules to the firewall (block all). However, he has always managed to hack into the system, and shows no signs of going away. I have already taken the machine back to the factory for reinstallation 2 times in 3 months. Today I reset COM security (no remote access), then my user and admin accounts simply disappeared, and I could not even log in. I used the recovery discs given to me by IBM, but after installing everything, my former settings remain unchanged.
Any advice would be greatly appreciated. Please keep your computer language simple, for I am a bona fide computer idiot. Thanks a million.