I've been using it for 2 years on various computers, various OS's. Never needed a driver (hate MS drivers.)
Suddenly I get it back from a friend and neither the mouse nor the keyboard will connect -- no unknown USB device in device manager at all (not detected by Bios either.) They connected for 15 seconds and then disconnected on first 2 attempts (Win7). Now they won't connect at all.
Tried on 3 computers, with Win7 and XP
Tried new batteries
Doesn't look like USB key is dirty -- how would I clean one???
Tried keyboard alone and mouse alone -- both light up.
Tried toggling various drivers
Hidden and Non-present devices are shown in my Device Manager
I finally called Microsoft to see if I can replace the USB receiver. Guess what? They are sending me the entire set for free! I've had it just shy of 3 years but I have no receipt. They don't care. I just have to send the old set back at my own expense -- no biggy to save $50. Quite pleased.
I really think some funky radio or electrical signals might have caused the short with the receiver. My friend lives in the basement of my Apt. building. He can't even get a reliable wifi connection to the router 10 feet away. No one's cell signal works down there. He also blew his desktop PSU recently. There's something up in that basement, methinks. Going to talk to the Landlord.