Update = Resolved  After  DELL-Cares agent setup a part replacement.
We have a Precision 7550 that the screen works in the bios and screen tests and when you first reimage windows, but once you restart the laptop after a windows install the screen shows the dell logo on boot up but then goes black and does not boot into windows. If I connect the computer to an external display, the external display shows and the laptop screen is not recognized. Any ideas on how to fix?
Precision 7550 screen not working after restart