I was using Norton Internet Security 2012 internet security trial version in my computer. I find Norton Internet Security 2012 very user friendly and interface is also very nice, it does not affect performance of my computer and that is why I have decided to go for full version. Now after that I have I have installed full version of the Norton Internet Security 2012 in my computer and then it has started giving me problems. When I open device manger in my computer at time I cannot see any devices, I have select show hidden devices option but it does nothing. This problem is annoying for me. I have tried to look for the solution on internet regarding this problem and some users have suggested there that doing reinstalling the Norton Internet Security 2012 will resolve this problem and then i have uninstalled Norton Internet Security 2012 from my system and then installed it again but after doing that also problem does not get solved. What should I do to solve this problem? In my computer I have windows XP operating system. Please help me with this.