When the wifi adapter is running, and you have an internet connection, pull up task manager and fine the process being used by ASUS' software and end the task. This should take care of that.
On a side note, why in the world do you have a 1000w PSU for that system? You're amount of power draw will put that at the least efficient power state on an already poorly-made power supply (Raidmax). You need to get you a better power supply before updating graphics cards.