What version of windows do you use?
did it use to work?
tried turning it off then on?
check the printer queue start>printers and faxes>double click printer
tried rebooting the pc?
looked into device manager to see if the printer is there right click my computer>properties>hardware>device manager, then look in ports and printer check its there. Do you see any yellow '!' marks?. Also have you made sure windows is up to date.
Update motherboard drivers.