Tilden,

* Does this issue also occur in safemode?
* Restart the computer
* At the first beep (older systems) or on the blue Dell screen (new systems), tap the F8 key (do not hold it down)
* At some point, the Advanced Options menu will appear
* Scroll to and select Safe Mode [press the Enter key]
* At the operating system listing [press the Enter key]
* Windows will start in Safe Mode. Close any boxes that may open, just get to the desktop and check the mouse

Chris,

The issue also occurs in safemode.

Let me give you some more information by what I mean as erratic.  It may help.  When I move the mouse north, it goes northeast, move it west, it goes southwest, move it north, it goes north, and move it south, it goes south.  The speed with which I move the mouse has a effect on what happens, i.e., the slower I move it, the more it does not move in the correct direction.  The faster I move the mouse, the more it goes in the correct direction. I never had this problem when it as new.

Do you have any other suggestions?  What about having it replaced under warranty and how do I do that?

Thanks for your help.

 

Tilden,

Have you tried different surfaces?

Yes.  First the original mouse pad that came with my computer.  Next just the hard surface of the table, which seemed a little better, but still no good.  Then a plain sheet of white paper and last a new mouse pad.  Still the same problems.  Chris, what about just aking Dell to replace the mouse under warranty?