Air conditioner not working

Hello, recently my air conditionor kinda stopped working.

In the morning or in the evening everything works just fine, normal operation.

In the middle of the day, being hot outside (30 to even over 40 degrees outside temperature), when i start the car, for 10-20 seconds everything works, after that a noise like a buzz starts to hear from around the middle of the car. While this sound is generated, the ventilation system still blows but very poor power.

After another 20-30 seconds the sound stops and also the ventilation system stops working, the fan in front of radiator also stops and i can t even control the vent system to turn on heat at least, nothing.

If anyone can help with anything, pleas do.

Thank you in advance, have a nice day!