This message was posted on behalf of Intel Corporation
I understand you are trying to set a dual display configuration but Windows and graphics control panel are not given you the option.
I will need to know the processor and motherboard model before given to you further troubleshooting. If it is possible please send me the results of Intel® System Support Utility.
Intel® System Support Utility
How to attach a file:
-Click on reply
-Click Use advanced editor (upper right side)
-Click Attach (lower right hand)