The following article deals with resolving an incorrect login message on touchscreen notebooks or desktop AIO (All In One) systems running the Windows 10 Operating System.
When you get to the Windows 10 login screen on your notebook or AIO system, do you see a message stating:
"Press and hold the power button, then press the volume down button to unlock (or press Control-Alt-Delete)"
Pressing the Power button and the Volume Down button to log in, is not a valid way of logging into this type of computer.
Microsoft's TechNet Social site has reported the issue being seen on several different system types, possibly related to using touchscreens and certain versions of the Windows 10 operating system.
This issue has been identified to occur when the Intel HID Event Filter driver is installed.
The fix for this will be updated in the next Windows 10 release (Redstone 3).