Please help--I have 2 wireless keyboard (Microsft Wireless Laser Keyboard 5000 & 6000) and both have the same problem--They Don't work. When I put in fresh batteries the little green light in the upper right corner stays lit for maybe 15 seconds and then dies out (checked the batteries and they are fine) . The keyoboard is totally unresponsive. The strange part is that both the 5000 & 6000 came with wireless mouse(s) and they work fine (so I know it's not the wirless connection). The device manager says that eveything is working fine --unfortunately in reality nothing works. Any reccomendations would be appreciated so I can get rid of all these wires!--Thanks!