There is Catalyst 8.7 out now You know. Also is windows up to date? You say You recently built Your PC, what voltage is RAM running at, You probably need 2.1V, by default it would be at 1.8V. Since it crashes at videos it might be also wrong video codecs installed.
That's true very true. I haven't installed any video codecs. Also I'm running the ram @ 2.00V. Thanks for the help. I'll try what you said