When I've re-imaged our Dell Latitude laptops, and we have group policy settings set to force CTRL ALT DEL to login, there is a different message:
Press and hold the power button, then press the volume down button to unlock. (Or you can unlock by pressing Ctrl+Alt+Delete.)
It's as if it thinks the laptop is a tablet. Not sure if this is a SmartDeploy Platform Pack issues, as a few forums are pointing this to HID Filter drivers and possible BIOS updates.
Just thought iI'd put it out there in case others are having the same issue