Windows 7 Professional 64 bit
Power management also unavailable.
HP Elitebook 840 G1 - This model does NOT have a separate video card
Have tried 6 different versions of HD Graphics downloaded from Windows Update, HP, and direct from Intel. All will load in Device Manager and say they are working fine, Intel Graphics Control Panel will not load, multiple monitors do not work, system will not go to sleep.
All video and power management works fine in Ubuntu