Hello, i have just bought a new pc with the GeForce GTX 650 in it, and the connections are 1x DVI 1x DVI-D and 1x Mini HDMI, ive had my first monitor hooked up too the DVI slot for about a month now and it works fine.
But ive tried to add a second monitor using the DVI-D and thenever i try to connect i get the "Signal cable disconnected" message for a few seconds and then it goes to standby.
I have unplugged, and pulegged in countless times and followed every peice of advice on the web so far, and NOTHING!
hmmm... that makes me think it's a hardware problem, rather than settings. try swapping the cables between monitors. leave the cables plugged into the pc, but just switch them.