Cursor Icon Disappears While Typing

We are on our second Inspiron 8600 within a month. We returned the first one as tech support thought it was a wiring problem. The new one we received has the exact same problem. Tech support has been unable to figure it out after a number of calls.  We sent the first one back because they though it may be faulty wiring in the palm pad. It happens no matter what mouse we are using. We've reloaded all the drivers, etc,etc.

 

The problem is:     While typing the cursor will, for no reason, disappear from the page. We then need to place it again with the mouse to keep typing. This happens frequently and needless to say is very annoying as we use this computer for business as well as personal purposes. It has happened so much that in an effort to retain a sense of humor we have started calling it "boinking" as the audio gives out a boink sound when it happens.

 

How likely is it that two new Dell's would both have a wiring problem from the factory?  I suspect it is some kind of conflict or something else in the system.

 

Anyone have similar problems?  Anyone figured out what it is?