Question Power cycling with no POST

Dec 24, 2021
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I was on my computer and got up to get a drink, when I came back my screen was black and nothing was responding. I waited a while and then turned it off and back on when turning back on my monitor picked up a signal for 1 second then the computer turned off and kept doing this, I turned it off and cut the switch to the power supply and with it off my fans and ram lights turned on for like half a second. The red mobo lights from start flash cpu for a second then switch to ram and stay there for maybe 20 seconds then flashes vga then a quick flash to boot and cuts the computer off and retrys. I have removed the gpu and tried with no luck, reseated the ram and tried different sticks, and used a different psu that I know works. I also reset the cmos and got nothing. Any tips would be greatly appreciated. Is my motherboard just cooked?
 
Dec 24, 2021
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So after watching it again right before it shuts off it quickly switches to the red cpu light before turning off
 

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