I suspect that you could have a print driver problem. However, it could also be a video driver issue, since the print driver is getting some of its information from the video driver. My recommendation would be to make sure that you have current drivers for both printer and video card. Some people say you should update the drivers for your monitor too, but since this is generally only for color management, I dont worry about that.
Assuming that updating those drivers does not resolve theproblem, I would remove ALL printers (to include any fax print drivers you may have), restart, then reinstall the Brother printer and restart again. If it STILL isn't fixed, you can probably try to reinstall windows over itself (repair mode), but generally, if it comes to that, I recommend a clean install.