Hi,
I am having the same issues. I am experiencing random BSOD's with the
Error : DRIVER_IRQL_NOT_LESS_OR_EQUAL(athw8x.sys). I have an Asus S400CA notebook that I recently bought. It came with Windows 8, but I upgraded it to Windows 8 Pro, as I have a license from MSDNAA. I also have the latest Atheros Wireless driver from the Asus site. It is an Atheros AR9845WB-EG device and I searched for it on google, but haven't found a newer driver.
The with the dump files from the latest restarts because of BSOD's and the nfo file are located here:
https://skydrive.live.com/#cid=68C7A01586F88A36&id=68C7A01586F88A36%21108
Thanks for the help,
Alex