I have a computer with 3 monitors connected to my nVidia Geforce 660 Ti graphics card. I had to move the computer across the room the other day, and after the move the one monitor connected using DisplayPort refuses to show anything.
Details
GigaByte motherboard (Intel Core i5 & 8 GB memory) , nVidia GeForce 660 Ti with 2 GB memory.
Monitor #1: 27" connected to the graphics card using DVI-D.
Monitor #2: 19" (VGA output only) connected to the DVI-I port on the graphics card using a VGA-to-DVI adapter.
Monitor #3: 19" (same model as monitor 2) connected to DisplayPort on the graphics card suing a VGA cable and a DisplayPort adapter.
The setup did work before the move.
Here is what I tried:
- Switched the two 19" monitors, that proved that the monitors are both good. The one connected using DisplayPort is always the one not showing anything.
- Replaced the VGA cable between the graphics card and the DisplayPort adapter.
If I power-cycle the monitor, the Acer logo (it's an Acer monitor) comes up, the power light is green, but after a few seconds the power light goes yellow and the message "no signal" shows up on the monitor. If I unplug the DisplayPort adapter when the computer is running, and then plug it in again, the monitor flickers a bit (no real picture, though, just a different shade of black) and the light goes green for a little bit. Then it goes yellow and the "no signal" message shows up.
When I look in Windows display properties or nVidia Control Panel, only the two first monitors show up. Windows simply refuses to see the last monitor.
Any suggestions?