Issues with Apps

Hi, I recently bought a new custom built PC and ever since I've been playing games, the screen goes black at random intervals, I can still move my mouse and react in game but the screen it self remains black for 2-3 seconds. The games I have currently tried and this occurred is: Warframe -...

EDIT: May have found a way to fix it Just yesterday I found that I couldn't connect to specific game servers to either download updates or to play in general on multiplayer servers. There was also a case of the voice and text application "Discord" being stuck in a constant loop of "Checking for...