Unable to pageup/pagedown/scroll in worksheet beyond 1st page
 

I have a spreadsheet in Excel 2007 where I cannot scroll beyond the 1st page
that is on the screen. I can see the line numbers changing in the line number
display box but cannot view the data that goes below what is displayed on the
screen. I am the owner of the spreadsheet and am the only one using it. I
converted a different spreadsheet from 2003 to 2007 and am NOT having the
problem. It would be really nice to be able to see all the data on this
spreadsheet but I don't even know where to begin with trouble shooting. Any
responses with suggestions or from anyone who has had the same issue and
resolved it would be greatly appreciated.