Air conditioner compressor is going out makes noise sometimes can it freeze and keep the car from starting?
The compressor should have an electric clutch so that it is disconnected at start up. The A/C compressor is used when the HVAC is at full window defrost. My Pontiac HVAC has two selections for windshield defrosting. Don't use the highest level until the compressor is healthy.
It the compressor clutch freezes up, it would likely cause the belt to break if you have a serpentine belt. It should not stop the car from starting.