I have 2 monitors that are plugged into my NVIDIA card. Frequently, I get an "Optimal Resolution" warning, and there is a third, phantom display showing on the Intel card. It can't be accessed, of course, but sometimes open windows will "display" there...i.e. be invisible. I can get the system to correct this by having it detect the displays, but it continues happening.
This has been going on for only a few weeks, and i have had this system, with this configuration for 8 months.
Any ideas, help, assistance greatly appreciated.