I installed Nod2 on windows 98SE over the top of 1, which had run problem free. The result was so drastic that I had to unintsall Nod and replace with another av. The problem was an illegal operation relating to NDetect when the network password box comes up (is ndetect nod or nortons?) then when windows is almost fully booted the nod kernel does illegal operation. Nod icon is then visible and control centre comes up but won't do anything eg update. Any ideas?