mouse pointer disappears

I have a Latitude D800 that I just finished updating the video BIOS and driver on. When it rebooted, there was a 3/8 inch tall section of the screen where the mouse pointer disappears. The section of screen where the mouse pointer disappears is about a third the way up from the bottom and covers the width of the screen.

As previously stated, I had just installed the newest video drivers AND bios. I tried reinstalling the video drivers (olld and new) and also tried removing and reinstalling the mouse pointer drivers. None of these things worked.

The mouse pointer works fine even though you cant see it. This problem started yesterday (Sept 4 2003) though I have noticed today that it will not exhibit this problem all the time.

Any help on this would be appreciated.

Thanks

Jonnypark