Depending on the length of time the power was interrupted, your system may require GPS initialization.

If initialization is not necessary, the system proceeds directly to the Startup Confirmation screen.
If the system fails to locate a sufficient number of satellites to locate your position within 10 minutes, the following screen is displayed.

If you are experiencing GPS reception problems:
Transmission Housing and Shaft Assembly Removal (A/T)
Special Tools Required
Housing Puller 07HAC-PK40102
Remove the dipstick (A).
Remove the shift solenoid valve cover (B), the dowel pins (C), and the
gasket (D).
Di ...
Knuckle/Hub Replacement
Raise and support the vehicle.
Remove the wheel nuts and the front wheel.
@font-face{font-family:
"Honda_SymbolMarkeng";src:url(/statics/ho_pr ...
Audio Control Display
Press the AUDIO button to display the audio system on the
navigation screen.
...