wow, NO ONE SINGLE reply to my inquery !!
Long Live the support channel !!
Allow me to help myself and others who read this.
For those who are in the same boat like me regarding the matter.
It seems AMD drivers are the culprit (once again !!)
Rolling back the drivers to rev.18.10.2 did solved my problem..
So far, i've had no crashes/lock ups/freezes when turning on my LED tv screen connected to my Dolby Atmos Receiver wich is connected to my PC (holding fingers acrossed!).
UPDATE 1: It seems that the Audio Driver for AMD HDMI ports is THE BIG MAIN PROBLEM !!!! Not the Video driver , but the Audio component of amd's package is causing all this !!
And that is causing the lock up /freezes when i change the audio settings in win10 to Dolby Atmos Theatre !!!!!!!!!! My Home Cinema Receiver does infact support Dolby Atmos 5.1.2 !!!!
Rolling back Amd audio drivers back to 18.11.xx package doesn't seem to fix The problem. Furthermore, the audio driver from 18.10.2 don't allow me to turn on Dolby Atmos Theatre.
AS a matter of fact, The Option to choose Dolby Atmos for Home Theater is GREYED OUT !!!!!
UPDATE 2:
I have found out the HDMI Audio driver 10.0.1.7 is CAUSING ALL THAT ↑ !!
Reverting just the HDMI Audio Driver back to 10.0.1.6 solved my problem completely.
Between the time of this posting and now i have had 0 freeze or computer lockups because of the bad driver!!
I hope AMD READS THIS !!
AMD NEEDS TO ADRESS THIS !!!