My printer HP3100 only prints part of a document?

[Crossword1]

When I print I only get half a page?

 

[drtweak]

OS? 64 bit 32 bit? Is it the LaserJet 3100 as shown

http://www.printerworks.com/Images/3100-LaserJet.jpg

Did it work fine before or something change?

 

[popatim]

What does print preview show?
I run into this often at work when some newb sets the printable area (MS Office) too small for the document.l