I discovered that my BIOS revision level (November 15, 2010) did not have the hot swapping ability incorporated. BIOS updates on May 23, 2011 and July 5, 2011 combined to make the DH67BL motherboard capable of hot swapping. So, I need to update my BIOS. Then my problems with hot swapping will go away. Thanks to all of you who looked at my questions.