Sorry for post it too quick so no explanation above.
I produced this issue whit the following steps :
1. Launch a video player and play video this is DXVA enabled. Also LAV/madvr enabled.
2. While playing video , Run GPU-z 1.12.0.
Then my screen freezes / sounds continue. Few seconds PC restart.
Powercolor RX460 and Driver is 16.10.2/ Win10 64bit 1607
So for now if try to use GPU monitor APP(but I doubt it is just a part of factor, not all parts) , it has instability issue.
And this issue seems is not just what it looks like. I will not say it is amd driver issue, since nVIDIA team seems also has similar issue on Win10 1607 for a while and no answer :
I believe form 16.7.3 to 16.10.2 AMD works hard to fix issue. Just hope this instability issue one day can be fully fixed.