MacBook Pro 16" 2012 screen does not open yet power is running. What to do?

Hi there clear_water,

Thanks for joining us in Apple Support Communities! We understand your MacBook Pro is powering on, but the display appears to be blank. We can provide some guidance.

To start, work through the steps in this support article:

If your Mac starts up to a blank screen

Let us know how it goes.

Take care.