When the computer is in use it works great. The power option is set to High Performance so the computer is never put to sleep but the monitors turn off after 15 minutes. When they get turned off they immediately show the Cable Not Connected message until the computer is used again.
The computer is running Windows 7 Professional with a Nvidia GeForce 8400GS video card. The card is using the factory adapter to connect two Acer V223w monitors via DVI cables. I have verified that the drivers are the current version. I think it is a monitor setting but I haven't found any way to adjust it.