My Radeon HD 4650 was working fine with two screens but now it will not recognize the second display. I have updated all drivers. I am running Windows 10 home 64bit on a Gigabyte G31M-Es2L board. Only one display device shows in the device manager. The same window shows on both screens. Is this a hardware fault? How can I test for that? I can't find anything like Catalyst Control Panel for Windows 10.
The display adapter is running driver version 22.19.640.0 from AMD 08-Nov-17