This is my panel state for the PMDG Boeing 737-800:
Most switches turned off
HPA units set
Passenenger jetway entry
GPU Disconnected
Parking brake set
Panel and background lights turned on partially
Empty Payload
25% Fuel
Transponder in Standby
Extract the GREAZER.sav file to the appropriate directory:
Steam directory:
C:\Users\[Username]\AppData\Roaming\Microsoft Flight Simulator\Packages\pmdg-aircraft-738\work\PanelState
Microsoft Store directory:
C:\Users\[Username]\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\LocalState\packages\pmdg-aircraft-738\work\PanelState
Load the state in the FMC via Pmdg Setup options. Set it as the default if you wish.
Go ahead and make mods and save another state if desired.