users info doesn't display on screen only during print preview(excel 2000)

Hi all,

I'm have a user who's stumped me and I can't figure this one out I need some
help. When workbook opens the only thing that shows up are the toolbars and
the name box and the formula bar which will show contents if any exist
there. But the rest of the page is gray I can't see page tabs or anything
else, unless I do a print preview. I've tried going into options and
changing the colors as well as resetting them, but still no luck. This is
for Excel 2000 and any help would be greatly appreciated.