2004 Audi A4 1.8t

Hello. My Audi told me to check coolent lvl
then said check oil. And it lost power and
died on side of highway. I towed it home and
now it won't turn over. The cars ignition turns
on and all electrical seems to be working
fine just won't start up. Is the computer
keeping me from starting it? I tried resetting
the computer but it still won't turn over. Any
ideas? I know the coolent is out and needs
filled but would this keep the car from
starting?