Annoying flashing

[PETROFSKO]

Hi there i updated my Asus Rogstrix b550 f gaming the other day to latest bios version,ever since i get a flashing red light light every second at where the Gpu connects to the MOBO.I've provided a video link .Everything seems fine no issues whatsoever with anything but this annoying light,which inncidently only goes of when i'm in the bios.Anyone got a suggestion thanks appreciated.https://youtube.com/shorts/-HLO1azcefg

 

[COLGeek]

Do you have the 4-pin, 8-pin, and 24-pin power cables firmly attached to the motherboard?