Hiya Forums, this is my first time being on this website other than lurking around. Anyways, I have built a custom computer a few days ago, and I've had a problem with my screen going black when playing games. I'm using a Windows 8..1 64-bit computer along with an XFX Radeon R7 260X. I know it isn't my HDMI cables. When my computer's screen goes black, I can hear audio from my videos and Skype but after a few minutes I cease to hear anything. Along with that, I have to force shut-down my computer, as it doesn't turn off properly. If any help is available, it'll be greatly appreciated. Edit: Forgot something. I'm using an Intel Core i5 Processor, and I'm also using a 650 watt power supply. 8GB of RAM and Direct X 11.2