1) "Video TDR Failure (atikmpag.sys)" Blue screen . its standart driver problem. I Do not use adrenaline software. I just install driver. Its works fine. I get onliy 1 times in 3 days.
2) rarely, the pc locks under load, the screen turns green and the pc restarts. My guess is that psu is unable to provide enough power
At first I was skeptical of RAM. İts Team Vulkan series. I will replace it with Corsair. The new ram will be delivered tomorrow. If the problem persists, there is only one PSU that I cannot replace. I think it is time to renew, even if it has no problem.
In my old system (I was having froozen and restart issues with 8Gb 2400 Ram and HD7990 again. But it was very, very rarely.
Note: Sorry for my poor english.