Sorry for my bad english.
i have bought 1 year ago a r9 290x. after that i have a some times a black screen problem with some games, World of warcraft, World of warplanes, tanks and Ships, AC unity, GTA etc,
Screen black and only can restart my pc with the on/off button.
i have try alot drivers, water cooling, all i have tryed, now i have win 10 with the new drivers but is still crashing.
The only thing what help is - 5% clock speed of the gpu. i hav make log's and temps is around 50 vram gpu.