It all started about 3 hours after I cleaned the dust out of my PC since my brother smelled something bad coming out of my pc, and he said it was coming out of the CPU. The power supply is 650 watts so I dont see that as a problem.I moved the CPU fan gto get a better clean and made sure static electricity wasn't a problem. I wasn't on carpet, I cleaned some parts with a Q-tip and vacuum. Has always worked. The monitor seems to turn off randomly then turn back on. I checked the power supply cable and it gets pretty dam hot. I cool it off and it works for a while then does it. Also I see these strips on my monitor that aren't too visible that go from the bottom to to the top. I've never seen them before. I don't have another power supply cable so I can't test it out. I played a game and the strips got 1324x worse, but no fps lag. I can't exactly rule out my graphics card, but the power supply cable to the monitor gets really hot and it happens. I'm not sure. ._. Help me out.
My computer is fine itself, all the fans running everything secured and the temps are low since I cleaned it out. No FPS lag in games and everything is fine. The only problem is the monitor which randomly shuts off. It stops when I cool the cable. I don't know why theres stripes going up and down like in old PC's.