Hi sms1295,
Here are some suggestions:
Create the Windows 11 USB setup disk.
Enable/connect your Wi-Fi adapter or dongle and access the internet from it. Disable the ethernet and verify you can access the internet using WiFi.
Eliminate these three drivers using Farbar. One of which is your Realtek Ethernet driver. You can add these lines to the existing fixlist and run it.
R2 CorsairLLAccessE5624B0A345A7E17A08498BFEDC2D42A7CBA71C2; C:\Program Files\Corsair\Corsair Device Control Service\bin\CorsairLLAccess64.sys [23632 2025-04-01] (Microsoft Windows Hardware Compatibility Publisher -> Corsair Memory, Inc.)
S3 rtcx21; C:\Windows\System32\DriverStore\FileRepository\rtcx21x64.inf_amd64_516e5c9b75c49dc2\rtcx21x64.sys [539648 2022-05-06] (Microsoft Windows -> Realtek)
U5 VBoxNetLwf; C:\Windows\System32\Drivers\VBoxNetLwf.sys [256536 2025-01-21] (Oracle America, Inc. -> Oracle and/or its affiliates)
Turn off Ethernet in BIOS.
Run "pnputil /delete-driver oem115.inf /uninstall /force" remove the Ethernet driver from the driver store. You have a backup already in C:\Drivers. Maybe you can move C:\Drivers to another disk or partition.
Disconnect other HDD/SSDs.
Using the USB setup disk, do an in-place upgrade with Keep files, or clean install using the "Keep nothing" option.
Note:
There are over 200 error entries of "Completing a failed non-ReadWrite SCSI SRB request". Not sure if it's significant. Disconnecting the other disks (at least the ones which you can disconnect) is worth a try.