HELP! My composer gives no display

My PC gives no display(no signal)

The PSU, RAM’s, Motherboard, CPU is new and case is new, it came with fans.

I’ve tried everything, resetting everything. I’m not sure if it’s the graphics card, I doubt it. No light on VGA or anything. But red light is on it. People have mentioned it’s mostly likely not update BIOS but I just need help with that if I can’t update without a display.

They’ve told me there’s the BIOS backslash but some people have said it needs a 32 GB usb drive or lower. Some say it doesn’t matter and all I have is a 128 GB usb drive.

I just genuinely need help and not misinformation. I’ve bought so may things that have led nothing to be solve.