17 R3 + Alienware Graphic Adapter . . . Anyone Have This?

So far so good, please with the mediocre priced GeForce GTX 960, but wonder if this is normal ?
PROBLEM: Cannot put computer to sleep, ever, no matter what I put setting: Must always shutdown.

NO GRAPHICS AMP CONNECTED:
WINDOWS PWER BUTTON: SHUTDOWN, RESTART, SLEEP

WITH GRAPHIC AMPLIFIER CONNECTED:
WINDOWS PWER BUTTON: SHUTDOWN, RESTART, no other options

DELL PRECISION 6500 AT OFFICE
WINDOWS PWER BUTTON: SHUTDOWN, RESTART, SLEEP, HIBERNATE

All systems running Windows 10 Pro/64, all updates to all drivers, etc.

Anyone have this configuration, would be interested in your results.