Alright, I've had this problem for a while now and am having trouble fixing it. About a year or so ago, months after installing a new graphics card for my computer, I started getting a black screen when gaming. It was not as if my monitor stopped receiving a signal, just as though my computer seemed to stop running and my screen goes black (the screen is lit black, not as if it is off). However, I am still able to talk to people on Skype and hear the sound coming from games. But, I found out that it is not simply the display that stops working because this happened one time when loading a game and my friend informed me that I had not loaded into the game minutes after the black screen had happened (even though I could still talk to my friend). This only happens while playing computer intensive games such as Battlefield 4 or Call of Duty: Advanced Warfare. But for lesser games, such as League of Legends, I can play for hours with no issues. I have attempted to solve the problem before. I found out that if I underclock my graphics card than it happens more rarely. I first assumed from this that my power supply must be faulty, but I replaced it with a 1000 watt power supply and the issue remained. I then replaced my graphics card recently to see if it was that and this seemed to help. I could play hours of Battlefield 4 without any interruption. But, 2 days in a row now, I stopped playing Battlefield 4 after a few hours, exited out, and left my computer on the desktop. I came back a few minutes later and the screen was black. So, it doesn't happen while gaming now, but after I finish gaming and close all programs. This is something I find very strange. So, from what I can tell it is not my GPU, my power supply, or an overheating issue as before I replaced the card it would happen as soon as after a few minutes of playing a computer intensive game, not enough time for it to become very hot. My next suspect is the RAM in my computer which is 8gb. I have a budget of about $150 to replace it and was thinking on getting 16gb just to have some surplus. So I ask to the great detectives of the computer world, do you think my RAM could be the issue? Or do I simply need to just get a new motherboard and processor and carry over my power supply, graphics card, hard drive, and new ram to a different computer. Thanks in advance for any feedback.