...
Error codes: Some error codes can be cleared by turning off and back on the front computer. Press the power button on the side of the screen, and then turn the key switch counterclockwise. Wait a minute and Press the power button to turn back on and then when prompted, turn the key switch.
Keyboard and mouse are wireless and run on batteries. If not working check the batteries and that the Bluetooth dongle is still in the Aeris, on the right hand side next to the network connections.