CPU light is on

Jun 1, 2018
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So My PC suddenly started freezing and then when i shut it off and attempted to restart it the only things that turned on were the red CPU light on my mobo, my pump, fans, and RAM lights but my PC won't post or Beep. I have tried to boot it without the Ram or HDDs connected but it still Won't boot what do i do?

CPU:Ryzen 7 1800X
Mobo: Gigabyte aorus ax370 gaming k5
GPU: asus 1080Ti strix
PSU: rm850x
RAM: corsair vengeance ddr4 3000MHz 4x8gb
 


How long was the PC running until it happened?
Go thru all power cables (specially 24-pin ATX and 8-pin 12v CPU) coming from your PSU and make sure they are connected properly on both ends.