Black screen while updating windows on a freshly build PC - HELP

So I just finished building my first PC. Almost everything went smoothly, I booted from a USB flash drive on which I had the windows installation media installed. I was able to go through the initial setup of both Windows 10 and 11. The problem occurs once I try to connect the PC to the internet and all the updates start coming in. While downloading/installing the updates, my screen goes black, the monitor shows that there is no signal and it stays black. If I try to restart the computer and boot from the drive I installed windows on the black screen persists. I am however able to enter BIOS on the PC.

I've tried reinstalling both windows 10 and 11 several times and nothing changes, as soon as I connect the device to the internet, the screen goes black. I am using an old VGA monitor with a display port adapter to connect to my GPU, but I'm not sure if that is the issue here.

Any thoughts?

PC specs:

CPU: Intel Core i5-12400F 2,50 GHz (Alder Lake-S)

GPU: Sapphire Nitro+ Radeon RX 6600 XT Gaming OC 8G, 8192 MB GDDR6

Motherboard: Gigabyte B660M DS3H DDR4, Intel B660 Mainboard - Sockel 1700, DDR

- BIOS version: F2 (10/29/2021)

Storage: Gigabyte NVMe SSD, PCIe 3.0 M.2 Typ 2280 - 512 GB

RAM: Corsair Vengeance RGB RS, DDR4-3600, CL18 - 16 GB Dual-Kit, schwarz

PSU: PHANTEKS AMP 80+ Gold Power Supply, Modular - 650 Watt