I ran out of gas in my car, so I put $5 gas in the car and it didn't start, so I added another $5 gas in in again and it still won't start, we tried boosting it and it won't start so i don't know what is wrong wtih it everything was fine before we ran out of gas, is there a button that needs to be pushed to reset something?..I have no idea please help!

Are you saying it will not start, or will not crank ?

Most newer cars are very sensitive to being ran low on gas. The fuel pump is in the tank and relies on fuel to cool it down. Your fuel pump is now probably not pumping the required pressure for the fuel injection system to work properly (or at all).

the fuel pump is cooled by gas so if u run it low alot or {OUT} it can burn it up
keep that tank at 1/4 or u will pay!!!

see if the cam is turning when trying to start the engine (look through the oil filler cap) if its not, you may have a broken timing belt (and engine damage) if it wasn't empty on the fuel gauge I doubt it ran out of gas.

check fuel pressure

ad at least 5 gallons of gas and try again
One gallon will not do it for its not enough

HAVE YOU TRIED CHECKING THE FUEL PUMP RELAY

Check the fuel filter, you may have clogged it when you filled the tank.

bad ground wire on battery.

Good chance that even on 4 gallons it may not start I would try for more, prime the fuel pump several times by turning the key on and leaving it on for around 5 seconds then shutting it off and repeating, obviously not trying to start. I've had cases where even small FWD cars won't start even on 4 gallons on a 12 gallon tank. The newer fuel pumps are a closed system that only allow a small portion of fuel into the pump housing to keep contamination down. Let me know if after adding a few more gallons it won't start we will trouble shoot from there. Thank you for using fixya.com