Question 9C & A2 Codes preventing boot to Windows

[Valzio]

SPECS:
Motherboard : MSI H97 Gaming 3
CPU : Intel i5-4590
GPU : Gigabyte GT 1030
SSD : Kingston 250GB
PSU : Turbo-x 650W

Hello guys.
I am getting the below codes, when starting up my computer and trying to boot into Windows 10,
which result to a black screen.
Codes : 9C followed by A2.
Apparently 9C is referred to "USB init." Usually caused by bad USB device connected or bad cable/port inside case or motherboard
and A2 is related to the bootable devices on your computer.

At first, I though that the issue might be with my drive,
so here are the things that I tried:
-Disconnected/reconnected the drive.
-Reinstalled windows 10 + cleaned and repartitioned the disk via CMD.
-Tried a different drive.

Issue persisted, so I then started troubleshooting the USBs and found out that the issue
occurs , only when I have a USB device(or many devices) , connected to the computer.
Whenever I disconnect my USB devices, the Codes are gone and the boot is flawless.

Here's a couple of things I've tried , regarding the USBs:
-Updated BIOS/Chipset/Drivers.
-Disabled all devices, except of my Boot directory, on BIOS.
-Tried different USB devices on every single one of the ports.
-Tried a different PSU + RAM.
-At the end, I tried installing a legacy/old BIOS update, in order to see if that's gonna fix it,
however the issue persisted again.

Do you have any suggestions?

Thanks for your time,
Val.

 

[Ralston18]

At the next sucessful boot try running the built in Windows troubleshooters. The troubleshooters may find and fix something.

Failing that, try "sfc /scannow" and "dism".

References:

https://www.lifewire.com/how-to-use-sfc-scannow-to-repair-windows-system-files-2626161

How to use DISM command tool to repair Windows 10 image | Windows Central

If the problem continues then power down, unplug, open the case.

Verify that all connectors, cards, RAM, jumpers, and case connections are fully and firmly in place.

Use a bright flashligh to carefully inspect for signs of damage. Especially around the USB ports and I/O panel.

Could be that the presence of one or more physically connected USB devices is causing an electrical short.