I was using my Dell Inspiron I5160 to browse the web.  I went to a font website and the screen started flickering.  The next thing I know all the colors were inverted.  I tried hard booting the system, system restore, last known good configuration...you name it I've tried it.  I have no clue how to fix this problem.  When I open the Magnifier and check the "invert colors" box, all the colors are fine.  Please help me...my eyes just can't take it anymore.