Car won't start or even turn over help! Suggestions?!

I would check the battery voltage first. Lights use very few amps so an almost dead battery can still make lights and radios work. But the starter uses a bunch of amps and needs a fully or nearly fully charged battery to turn it over.

We tried jumping the car even and nada

And we checked the battery it's fully charged

Sounds like a pinched, broken or disconnected wire if its electrical. Check for power at the starter and them start working your way upstream to find out where the problem is.

Don't get in over your head trying to save money. You will be better off in the long run taking your vehicle to a reputable professional.

Could be ignition switch, clutch switch, starter solenoid, or any of the electrical connections between. I have seen plenty of times where something unrelated to the repair breaks while it's being fixed. Put a clutch in a pickup and the clutch switch (the one inside the vehicle mounted behind the clutch pedal) just happened to go bad while replacing the clutch. Aside from parking the truck in the driveway we never stepped into the vehicle while working on it.

Did you ever find out what the problem was?

did you ever find the issue? i have a 2005 chevy colbalt and we just fixed a blown head gasket, put it all back together and then the starter wouldnt work got a new starter and put it on and now all my lights and everything is coming on but wont start by the key but we can jump the starter and it starts so what is the solution to this problem i would love to know we are thinking its a ground but im not sure, seems like when one thing goes wrong a million others follow with this car!

Bump I am having the same issue!!!