Hard to start when cold when does start dies in five minutes says it is over heating even when it hasn,t run in a couple a days

Let's start with the obvious make sure the radiator has antifreez second check for cracks in the radiator cap rubber this also overheats an engine then make sure that once the engine gets hot the radiator fans go on if they dont it will overheat if both are ok then you have to make sure the thermostat is not the problem it could be stuck closed change it also check the water temperature sensor it might be faulty or the wires might be coroded.The temp sensor is cheap so buy a new one it's about $10.00 the other thing is a water pump failure or a radiator or heater core calcium build up clogging up the system brought on by using water instead of antifreez or worst case scenerio a blown head gasket check for water in the oil or water coming out the muffler accompanied by a white cloud of smoke you could also check the spark plugs for antifreez on them this would indicate a head gasket problem