Question Red VGA light and no POST after updating BIOS ?

[Waterrbuckets]

Hello, I built a new pc this weekend and after taking it home I booted it up and tried to install windows from a usb drive but I kept getting a blue screen with a message saying my device needed repair so I downloaded it a couple more times and tried again but I kept getting the same message, I thought for some reason maybe an outdated BIOS was the problem so I downloaded the bios update onto the usb then updated the BIOS.

After maybe 5-10 minutes the screen was black and so I turned the computer off then back on and nothing.
I then noticed everytime after that happened and I turned the computer on the vga light was solid red on my motherboard. So I tried clearing cmos, taking out components, even when I took out the gpu and tried to hook the hdmi up directly to the motherboard the vga light was still solid red, also the motherboard will not power anything through its usb ports such as keyboard and mouse but it does power the usb drive,

I’ve tried different HDMI and DisplayPort cords into the GPU and to the motherboard but nothing is seeming to work, the system turns on fine but can't get past the red VGA light during POST.

I’m thinking either I updated to the wrong BIOS or possibly stopped the BIOS update. I was thinking of flashing the BIOS with a usb drive and maybe even getting a BIOS reprogrammer online and trying to reprogram it. Any recommendations or suggestions?

The specs are:
Mobo: Gigabyte Aorus Z390 Elite
CPU: i9-9900k
GPU: Asus RTX 4070 OC
RAM: Corsair Vengeance LPX 32GB (2x16),
Cooler: MSI Mag 240r
PSU: Corsair cx750m
Case: NZXT H510

 

[helpstar]

check if the motherboard is somehow shortening to the case
reset the BIOS by jumper CLR_CMOS
check power supply connections again on both ends, unplug and replug all cables
check the motherboard´s CPU socket pins, if bent or discolored

remove any unnecessary devices, only minimum and try to boot. (motherboard, cpu+ cooler with fan, one ram in dimm slot B2, PSU, keyboard)

if this doesn´t work, try getting the backup BIOS to run
insert an older unzipped BIOS file on a USB flash drive
let it power on, then power off, then power on, then power off, then power on and eventually repeat more times till the backup BIOS appears