Card: GeForce 8400 GS, Dual Monitor Solution 59 pin socket (DMS-59) to 2 VGA adapter cable (tried two of these cables)
Driver: 306.97 October 2012 - latest driver and clean reset install
Nvidia driver 285.62 from Oct 2011 is the latest driver to dual display. And all previous drivers back to...
analog input
clean install
compatibility
display settings
dms-59
driver issues
dual display
geforce8400gs
graphics driver
monitor signal
multi monitor
nvidia control panel
power save mode
screen resolution
troubleshooting
vga adapter
video output
windows 7
windows upgrade