I have a
MSI Z87-G43 motherboard with
i5-4670K CPU. When I connect two monitors to the onboard graphic card (1xVGA and 1xDVI) both screens are black, there seems to be a connection when the pc is turned on (i.e it says "DVI, or VGA") but nothing actually shows.
If I only connect one of them then it all works fine. If I connect a second screen while in Windows 8 the computer will hang (no ctrl+alt-del, no nothing).
The setting for dual monitor is also enabled in the BIOS.
The graphics drivers and BIOS are updated.