Hi There,
My model is ASUS FX506LU, it is bright new.
I have had trouble for long periods of time that my WIFI was broke irregularly or malfunctionally.
Many methods have been tried but still fail.
Even though I brought it to the ASUS repairement center, they asked me to leave my notebook there.
Finally, I found a way to solve it that you may enable the settings of Network Stack, Ipv4 PXE Support, and Ipv6 PXE Support in the Advance Mode of BIOS.
I am happy to overcome the trouble.
Share with dudes and good luck to you.
L. Lin