Just put up my first PC and tried to power it on. Everything including CPU, Motherboard, RAM, PSU, HDD/SSD works fine but the graphic cards did not work. It had 2 red LED above the power cable and both fans (on the card and with the radiator) did not work. I did have the light on the "EVGA Hybrid" logo on but the motherboard failed to recognize the graphic card. Tried different PCIe slots and different PCIe cables (yes I did use 2 separate cables to power the graphic card) but didn't work. Below is the details about my PC and any helps are welcomed (including what is the meaning of 2 red LED). Thank you guys so much.
CPU: Intel I9 9900K
Motherboard: ASUS ROG Maximus XI Extreme Z390
PSU: Corsair HX850i (850 Watts)
GPU: EVGA GeForce RTX 2080 TI FTW3 ULTRA HYBRID GAMING