Hello again, forgive my multiple posting, but I do not know what to do at this point.

I keep trying to update Final Fantasy XIV on my desktop, and it keeps stopping, with error codes [11006][20641][20643]. Here's what I have done to try and fix it:

-Uninstalling completely and reinstalling by downloading the client time after time.
-Borrowing my friends physical disk and installing from there (crashes during update, not during install for this).
-Connecting to my router with LAN (previously have used wireless).
-Yelling and cursing. A LOT.

Is there any other path I can take? Thanks!