Question Boot Looping

Jan 20, 2020
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Hello! I am a first time builder and I just completed my first build. Everything is seated right, which I made sure of, but every time I try to boot the fans and LEDs turn on but no post. Then it just shuts off.
my components are:
Processor: AMD Ryzen 5 2600
GPU: Gigabyte GTX 1660
Motherboard: ASRock b450 steel legend
RAM: Aegis 4x2 8gb
Hope someone knows how to fix this!!