Air conditioner problem

[jayrh68]

OK, I have searched through at various air conditioning problems but nothing seems to pertain my issues. First off I bought this 2007 X5 4.8 without maybe knowing its complete history with @64k miles on it. I have found pieces of serpentine belt leading me to believe it has kicked that off at one time. I have put about 30k miles on it since and has been very reliable, however i have no AC. I have it set on cool in the Idrive as well as intensive but no cool air at all. It does seem to have a charge, over charge actually so I bled it off. Now I am having trouble determining if the clutch is actually kicking in or not, there is not significant "click", but watching the RPMs, there is some change when switching to MAX AC. I seem absolutely no change at all in the pressure, and yes I only have the pressure gauge on a can of recharge, but it seems to indicate properly. Searches for fuse or relay locations seem to dead end on me. I am leaning more toward the compressor may be good and clutches in energizing but not actuating the compressor. The remnants of the belt make me wonder if this thing got hot and for some reason that only the BMW rocket scientist would locked out the signal to the AC and needs some kind of reset. Would really like some insight incase anyone knows more about this system. Thanks