Asus ROG STRIX B550-A red LED lighting up - Troubleshooting

Hey, first time posting here. I lost all nerves trying to get this PC running for the last 6 hours. After like 10 years I decided to upgrade my PC by buying a new one. The new specs are: Asus ROG STRIX B550-A gaming 2x8GB Corsair 3600 DDR4 Ryzen 5600X Corsair H100i Platinum SE AIO cooler Samsung

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