Northern Ireland is the smallest of the four countries of the United Kingdom in terms of both area and population, containing 2.9% of the total population and 5.7% of the total area of the United Kingdom.
If you are using a wireless mouse with a USB connector and a PS/2 keyboard, verify that the USB mouse is plugged in a USB port on the computer and that the purple keyboard PS/2 plug is connected to the purple PS/2 port on the computer.
Resync Your Devices with the USB Receiver. Your keyboard and mouse work by sending wireless signals to a USB receiver that came with your setup. This might be a small hub that plugs into a USB port with a wire, a small dongle similar in size and shape to a thumb drive, or a very tiny unit that is barely visible once you slide it into a USB port.