DRAM and CPU light up red on the motherboard when I start my PC.

I have had my PC for about two years, and up until now everything has been fine. I was playing a game (MW2) when my monitor went black, not detecting a signal from my HDMI 1, and my keyboard turned off. My pc tower stayed lit and everything was working (like the fans), except I couldn’t get my pc to display onto the monitor. On my motherboard, a red light is displaying on DRAM and every so often it flicks to CPU. I’ve already removed and reinstalled both my sticks of ram, and nothing has worked.

Any feedback and/or help is much appreciated. Thanks!!!

motherboard: b450 pro wifi aorus  
graphics card: geforce gtx 1650 super 
power supply: gamemax vp 600rgb
cpu: amd ryzen 5
ram: warhawk 8gb (2)


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