I was working on my laptop using a wireless keyboard and mouse. The keyboard quit working the mouse was working. I bought a new wireless key board and it is not working either. I think I must have locked out some how.
There is no real way to lock a keyboard. Did you change the batteries in your old keyboard? And make sure you have setup the new keyboard properly? What happens when you connect the wireless dongle to the laptop? Or is it using Bluetooth? Did you check the bluetooth settings to see if it sees the devices as paired and that bluetooth is not shut off?