If you are making entries using the numeric keypad, it sounds like you turned
your Num Lock off. Try pressing NUM LOCK (there should be alight that comes
on above it when you do) & try again.

HTH|:)

"jodj" wrote:

I am trying to add data to an existing worksheet this morning. I can click
on the clel, but when I try to enter the data, the worksheet "jumps", am
unable to enter any data. What have I done wrong?