Hello - this might possibly be a bit outside of the Windows discussion since I run Windows 7 on a RH Linux laptop (it's a work requirement), but I'll ask since I have not been able to figure this out or find a solution anywhere.

I use 3 monitors - laptop is #1 and I use #2 as primary:
Click image for larger version. 

Name:	image.png 
Views:	16 
Size:	81.3 KB 
ID:	151392

This works most of the time - but if I change the size of any screen so that it is not maximized I lose the main display to the laptop. I know this, so I can avoid changing the size. However, the main display change also happens quietly for unknown reasons - regularly enough to be annoying and sometimes at really bad moments. I'll be working on something and go down to my windows toolbar - only to find it's moved to screen #1.

Click image for larger version. 

Name:	image.png 
Views:	16 
Size:	45.8 KB 
ID:	151393

The fix is to call up the screen resolution, select #2 and make it the main display. This is good - until it happens again. I just need something to make it stick! Anyone had any experience with this? Thanks.