Cyberslam

I have got this weird problem with my laptop. Whenever i select any item on the desktop or any folder, all the other items before that selected item gets automatically selected. Its the same for any selection whether it be mails in outlook, files in folder etc.. Sometimes when i open a folder, first item of that folder gets highlited i.e. like if i am trying to change its name.

I have even changed the mouse and it works fine for a while but then its the same.

It can't be any virus nor spyware as i already have Trend Micro installed.


Thanks