2005 chevy equinox will not start

hello i'm new here. just trying to find some info. the check engine light has come on on my 2005 chevy equinox. now it wont start. i ran the obd2 on it but all that comes out is 00 where the code goes and a big 0 under it.it starts to turn like if its going to start but it doesnt.i was thinking fuel pump/filter,ignition switch/ignition or coil. from what i've read these have a problem starting all the time. it always has,but this is the first time that it didnt start. it has 78182 miles about. no major work has ever been done except for regular maintenance. it has oil,water and the batteries good. i thought the starter at first,but it doesnt seem to be getting stuck.like i said its always done this but i heard it was normal for this vehicle,but this time it didnt start. if any one can help in any way i would really appreciate it. thanks in advance for your thoughts and suggestions. again when i ran the obd 2 on it nothing came out,could i possibly be hooking it up wrong?

what is the security light doing when it does not start