Flashes

I have just built a new computer a week ago, and upon starting it and installing the drivers, the screen flashed black multiple times, and some apps showed black screens. I also got multiple blue screens. I suspected it was the graphics card which was the problem, so i ordered a new one from...

Hi! I built myself a new computer and it worked perfectly fine for a few weeks. Recently (few days) i have noticed that my screen flashes black for a split second. This happens pretty rarely (about 5 times a day). It happenes to both of my monitors but not at the same time. I suspect that it's...