oh I wonder if one of the metal screws or spacers underneath are touching in the wrong place and shorting something??
and that is a warning for it??

I know on a HP I had to move the spacers/screws around for a best fit when i installed a new /different MB.

It just seems like it must mean something on the chassis/case?? is touching something...

If that doesn't help maybe give a quick call to the local pc fix it shop and ask if they know what it might mean.

goggled it -
http://www.google.com/search?q=chasi...ient=firefox-a