I just built a computer and everything worked just fine. A week later, the monitor just stopped receiving the signal from the graphics card. The monitor is still on, and whenever the cable is plugged into it, it flickers onto Windows, and just goes to not receiving signal, check cable, then flickers on again for a fourth of a second, then goes to not receiving signal and so on. It works just fine for about 30 minutes when I force a shut down and restart my computer, but then it just goes right back to the flickering. I'm wondering if I should get a new cable or bite the bullet and get a new monitor.