This is a strange one, and I'm fed up that I haven't been bale to solve it myself. My pc did a reboot last week sometime in the night having, I belive, done an automatic update. However, since I havent been able to get my MS 200 wireless keyboard working - strangely the mouse still does and the function keys on the keyboard do but not the actual letters. Since then I've tried another wireless keyboard - same result - and tried a wired usb keybaord with no result whatsoever. Has anyone ever come across this? I've tried looking online but nothing obvious has come up. I'm thinking I may need to send this over to PC WORLD! help!