I just bought a beautiful brand new mouse, the Logitech MediaPlay cordless mouse. I installed on my pc and when I use (internet browsing, games, documents) outside loses her head. Outside of games, a sudden, the cursor will finish in the top right or bottom left or elsewhere without the slightest movement I made. In games the camera can be found at once by or air for a while and I can not do anything. By now too, the camera starts spinning in circles at breakneck speed. So I started with a completely blank page stuck on the surface but nothing changed. I spent the whole afternoon to find it at the end a blue rug with the words on the box (designed for optical mice). Please suggest.