Question My pc won’t boot after build

Oct 14, 2020
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I just built my pc and have no luck getting it to boot (nothing being displayed to monitor).

Specs:
asus rog strix b450-f mobo
1660 super
ryzen 5 3600 (amd sent me the bootkit), Corsair vengeance 16gb ram (3600)
500gb crucial ssd
1 tb segage hdd

I’ve tried replacing the mobo and gpu, tried with 3200 MHz ram and I’m still getting the same issue. The yellow-green light indicator keeps going on. The manual of the mobo says that light indicates a boot issue but I can’t seem to figure out the issue.