GBO, you need to snap yourself out of this mind set of flying LNAV west of PEN. It headed towards VAMPI then 10nm north of MEKAR. That’s not a normal LNAV way to fly let alone on airways. Please Flight ID comprises of a few info. Please be specific what you are referring to. Please stop embarrassing yourself about Flight ID entry via MCDU.
Why is everyone thinking of multiple system failures that knocked out the FMC, Displays, comms, pressurisation system etc to fit into the scenario? If you have read enough to understand the B777, only one system failure can caused this scenario. Please read more instead of keep pushing everyone to suggest for a flightpath and final position. You think Mike G came out with that final location? Read more!