So it all started when my boss told me his car keeps overheating and asked my opinion, which was simple, the thermostat was faulty. After consulting with another backyard mechanic he chose to ignore my diagnosis and listen the the other party that told him it was fine and just had a intermittent cooling problem. About a week later it started overheating again, but this time because the radiator fluid kept disappearing. And with that symptom paired with the with moisture and tan froth in the reservoir I determined that the head gasket had to be change. After the successful repair it quit overheating and seemed all was fine on the cooling end. But the ETC was acting weird so it went into limp mode. After driving for approximately 15/20 miles of driving the temp on the gauge started to climb and I switched to the digital reading gauge and it showed fine (215* F). I then pulled to a parking lot where i opened the hood and by the time i removed the Hemi Cover it stalled. I tried to start it back and it reved up to 2000 rpm then stalled again, I tried to start it again, it turned over with no fire for about 1/2 revolutions then stopped with a clank. Now when I turn the key it just clicks one time. So far with no luck i've tried jump starting it, checked all terminal connectors, and even rocking it back and fourth in park. There are no fluids or any moisture under it. And I don't think its the starter because it sounds like the armature ejects against the flywheel but just dosent turn. Since the head gasket repair it has become my car and only vehicle at the moment, So if you have any advice or input please help.