Question PC won't post with IGPU

[MetaRaptor]

My brother just built his new PC and we can't get any display to the monitor. He doesn't have a dedicated GPU yet so there hasn't been one in the system. All the parts turn on and seem to be working but I'm not sure because there isn't any debug lights (physically no lights anywhere) on the motherboard. We tried updating the BIOS but there's no way to tell if it's working because we can't find the flashback LED. I have my PC to test his parts but he doesn't live near me so we want to try everything we can before he takes the trip.

PCPartPicker Part List: https://pcpartpicker.com/list/PR2Wb2

CPU: AMD Ryzen 5 7600X 4.7 GHz 6-Core Processor
CPU Cooler: be quiet! Pure Rock Slim 2 CPU Cooler
Motherboard: ASRock A620I LIGHTNING WIFI Mini ITX AM5 Motherboard
Memory: TEAMGROUP T-Create Expert 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory
Storage: Western Digital Black SN770 1 TB M.2-2280 PCIe 4.0 X4 NVME Solid State Drive
Power Supply: Corsair SF750 (2024) 750 W 80+ Platinum Certified Fully Modular SFX Power Supply
Monitor: *Acer Nitro XV1 XV271U M3bmiiprx 27.0" 2560 x 1440 180 Hz Monitor
Case: Mechanic Master C26 Case

 

[Lutfij]

Have you followed through steps outlined in this video;

View: https://youtu.be/fqKs9fekNNY

? Different board but the principle remains the same.

The LED should be exactly where the BIOS FlashBack button is located

(that slit between the wifi antenna and the BIOS FlashBack button), which leads me to think maybe you're using the wrong USB port.

 

[MetaRaptor]

He's using the right port. It's the one with the outline around it and we checked the manual. I figured that slit was the LED but he couldn't tell. In that case, it's not lighting up for some reason. I'll have him watch the video and redo it. Also, the manual says to download an extra file when doing a flashback and to name it something different than what is in the video.