Well I have a logitech VX nano mouse that has been working great for the past year, but all of a sudden my laptop (Acer Aspire 5542) wont pick it up any more. The USB ports aren't screwed because they work with normal USB's so I don't know. I just recently got a macbook and I think it stopped being recognised after I used my mouse on the mac, maybe that's part of the problem. It still works on the Mac, but not on my Acer. Any help will be appreciated. Thanks. EDIT: My laptop does recognise that there is a USB device plugged in and logitech setpoint says there is a VX nano connected, but setpoint wont show any details for battery levels and the mouse just wont work.