Today i built my first computer. It took me like 4 hours but it is completed. I did try one test at the start of me plugging in only the motherboard, graphics card, and cpu (with cpu cooler of course) into my monitor. All it did was turn on and stay on with the monitor not connecting. The monitor just switched between analog and hdmi. I thought that it was a small problem with the hdmi cable i was using and continued. Once it was done, i turned it on, grabbed a new hdmi cable and, plugged it in. All it did was turn on and off, motherboard lighting up, GPU lighting up, case fans lighting up, for 6 seconds then turn off, it did this over and over again. The monitor was the same story as before, except now after 3 minutes of switching, it just turns off. Could it be a CPU overheating problem? Any help?