My car was staring fine then this morning it just will not turn over.
Battery is fine.
Could be starter/solionid

How are your battery terminals ? It sounds like that would be first place to check. Then I would check the starter next take off and go to parts store and have them check it ! I'm not sure if they have a selnoid in the engine compartment or if it's on starter. You will need to ask a parts dealer. I have had a lot of bad grounds on cars that will do the same thing ! Good Luck !

It was what I thought. Replaced the complete starter assy and all is good.