Hello everyone, i was driving this morning till my work place, 1 min left till place v-belt start squeaking , when i stop the car smoke comes from the bonnet and bad smell , and then i tried to investigate and they saw the A/C compressor is stopping v belt and burning the belt and was even hard to start the car , but when i turn on A/C in a car everything was fine again and even when is off, any idea why this did this happen ? And how to sort this out or replace the compressor, thanks 
P.S when this happend the AC was OFF and car was on normal working temperature.
P.S when this happend the AC was OFF and car was on normal working temperature.
