See
http://support.microsoft.com/?kbid=839371 "Margin marks or crop
marks appear on each corner of the page when you open a document in Word".
If the previous suggestion doesn't help, then:
1. Click on Start | Control Panel | Regional & Language Options.
2. On the Regional Options tab, select English US under "Standards
and formats", and select US under "Location".
3. On the Languages tab, click on Details | Settings tab | Default
input language: English US | remove all Asian and right-to-left
languages listed under "Installed services" | OK, and uncheck the
"Install files for complex script and right-to-left languages" and
"Install files for East Asian languages" boxes | Apply | OK.
If the first two suggestions don't help, then back up your Windows
registry in case Something Bad happens next, close all open
applications, and click on Start | Run | Open: regedit. Rename the
"HKEY_CURRENT_USER\Software\Microsoft\Office\<Office
version>\Common\LanguageResources" key. Exit. Restart the computer.