Device and Printer window is blank

The device and printer window is empty. Almost everything is working except blue tooth and IE9. However, there is no device or printer noted.

Setting the "Bluetooth Support Service" to automatic in Services solved this issue for other people in the Forum.

As for IE9, and the blank D&P, see this:
Devices and Printers Dialog Box Empty - Microsoft Answers
and
Internet Explorer FAQ - Repair IE8 (IE7) and IE9

Hope That Helps