FFXIV Boot Error [11003][10009][10019]

[PaixWolf]

Sure thing.

We have tried both wired and wireless connections from several sources to rule out his internet and his router.
For the Laptop/Desktop there are no similarities aside from them both being his, the desktop is 3-4 years old and he downloaded the installer from https://www.finalfantasyxiv.com/playersdownload/na/
The error occurs every time he tries to launch FFXIV after it's finished installing from the initial installer.
There are no specific programs running aside from default microsoft applications

-Tried Port Forwarding
-Tried Turning off firewalls
-Tried using CCleaner to clean registry/Spybot & Windows Security to clean potential viruses
-Tried Uninstalling and reinstalling after deleting all associated files such as the folder in 'my games' and 'appdata'
-Tried replacing all of the program files with program files from working copy on my computer, which only succeeded in me getting locked out of my account and needing to change my password, lol.
-Tried editing registry

One day he logged out and when he went to log back in the following morning, it just wouldn't work anymore.

*Edit: It turns out that his father thought that factory restoring the computers meant going in and resetting everything to defaults, not true factory restoration. After I went in and reset his computer properly and installed FFXIV before anything else it worked without an issue.