As per title. I have an M3800 with both Intel 4600 and Quadro display adapters. It appears that the operating system (Win7-64) has chosen to use the Intel 4600 instead of the Quadro as shown below.
I'm terrified that if I was to disable the Intel 4600, that I'd permanently loose the display without a chance to recover (turning the M3800 into a $2000 brick).