A/C Compressor noise?

Yep, the compressor has come apart internally, there is no maintenance for this part, just replacement. Here is a video on how to vacuum down and recharge the system which will need to be done before removing the compressor.

https://www.youtube.com/watch?v=4EqdrBVb0sY&t=55s

Here is how the AC compressor is changed out in the images below. Also, once the system is opened you need to check for debris inside the refrigerant tubes because the system will need to be flashed before the new compressor goes on if this is the case. I would install a new receiver dryer as well. You will need to remove the radiator cooling fan, alternator and the condenser to replace the receiver dryer. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

I am sorry its a suttle squeaking sound when hood is opened.

"A/C compressor kicks in it makes a grinding noise" so this is not the case?

No Sir.