2008 ford expedition eddie baure will not start?

My truck was running fine no dash lights nothind. I turned is off for about 10 min. Got back in it and wouldn't start. Ford expedition Eddie

Turn off the radio and everything that can make noise. Turn the key to ON, not START. Listen for a quiet motor noise. It should run for about 3 or 4 seconds. That is the fuel pump. It primes the fuel lines.
If you don't hear that quiet motor, then I'd suspect the fuel pump, or the fuse to the fuel pump.
If it turns over fine, I would not suspect the alternator or battery.

You can avoid a lot of computer related problems by taking a few seconds to start your vehicle. In that, turning the key to ON and waiting for the first set of buzzer, bells and lights to go off from the dash, gives the computer time to reset the system and sensors.

No it turnes over just fine just won't start.

The truck is 7 years old with i do not know how many miles but the alternator may have failed and it would not charge the battery. If you have AAA, give em a call.