no monitor display

The computer loses contact with the my two screens and sometimes the computer shuts down and restarts by itself. On the screens it says "display port, no signal". When does the problem occur? The problem occurs not only when gaming, but also when the computer is cool and unloaded. But mainly...

I built my PC 9 to 10 months ago and this problem had recently started probably a few days ago. I turn my pc on and a red light turns on along with it, the monitor doesn’t have a display either. Normally after leaving it unplugged for 4+ hours it would go back to normal but today it just didn’t...