Although I'm able to boot excel onto my screen, I often find that I am
unable to input data.

When I try to arrow out I can't move to the next cell. Then, when I use my
mouse to move from one cell to the next the cells get painted(shaded). As
II move my mouse, additional cells are painted over like a continous
scrolling affect.

When call up the Windows Task Master to end the program I'm told that I
cannot end the program. But then a dialogue box comes on which allows me to
end it.

I have tried re-installing the application and even repairing it. The
computer tells me that these attemps have been sucessful but I still have the
same problems.

I have been able to work in Excel about 3 times out of my last 20 attempts
so I'm befuddled when it starts acting up. Please help.