When you installed the driver did you use the CD that came with the printer or did you download the latest set from here http://welcome.solutions.brother.com/bsc/public/us/us/en/dlf/download_index.html?reg=us&c=us&lang=en&prod=hl5370dw_us&dlid=&flang=English&os=93&type2=-1
Also did you fully uninstall the printer or just install over the top ?