GTX660 and multiple monitors issue

[miatadan]

I recently purchased Asus PB287Q 27" monitor with 2560x1440 resolution

When I connected the Asus PB287Q using display port connection setting 2560x1440 and Samsung PX2370 using DVI-D connection 1920x1080, every time I shut down or restart computer, I lose Samsung monitor altogether and have to do all multiple monitors assigning again.

If I use DVI-D for Asus monitor and DVI-I for Samsung monitor, computer does not lose Samsung monitor when I shut down or restart computer.

Is this a problem with Nvidia GTX660 only or all current 600 series video cards?

Why can you not use DVI-D and display port at same time?

If I connect 3rd monitor using hdmi will computer start losing monitor connections again?

Dan