Problem with peripherals can happen suddenly. Yesterday your printer, mouse or keyboard was working fine, but you turn your computer on today and boom – no printer, mouse or keyboard at all. In most cases this problem can be caused by driver issue. First of all try to connect your faulty hardware to another USB port. Sometimes this helps to repair minor faults.
In few cases, the problem can be with faulty hardware. If none of your peripherals connected through USB are not working, this is probably motherboard fault. If you have wi-fi printer and it is not working, this can be caused by wrong drivers or wrong wi-fi router configuration.