External Monitor does not show preboot screen for bitlocker

Question

is there any way to enable external monitor to show bitlocker preboot screen

jphughan · Accepted Answer

This should work as long as the laptop lid was closed from initial startup, but that means you'd have to power it on by pressing an external power button as you'd find on a Dell docking station.  Otherwise, if the laptop display was active at startup, I believe it remains the only active display until Windows (and the GPU drivers) load.

lokafri · Answer

I made a device that allowed me to press the power on button with the lid closed. and still the external display did not come up.

jphughan · Answer

Ok, then maybe it only works that way if an actual external power button was used to power the system on, as in the case of a docking station. I’ve admittedly never actually tried a device to trigger the system’s power button while the lid is closed.

Alienware

External Monitor does not show preboot screen for bitlocker

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