My parents' new Dell 4300 has the Logitech wireless mouse and keyboard option. Both have worked great, but since they're wireless they run on batteries. The mouse batteries went dead. Kaput. No signal at all. Sounds simple enough to fix, right? Just put in new batteries? Well, I put in new batteries, hit the 'connect' button on the reciever, hit the 'connect' button on the mouse, and nothing happens. The mouse cursor won't move,the buttons won't respond. The keyboard works fine, so I don't think the reciever is broken. I've tried plugging in plain two-button PS2 cord mouse and that works fine. Any ideas?