I'm not able to use my multiple monitors (3) setup after upgrading to Windows 10 64 bit. It used to be no problem in Windows 8.1 I have an AMD 7800 HD card with 4 outputs and I'm running the most current driver and software from AMD. All monitors work independently or 2 at a time but the third one doesn't even show up in the radeon software. They all three do show up in the display properties in Windows but I'm not able to activate the 3rd monitor while the other 2 are operations. Any suggestions?