ive been having exct same problems downloaded new intel drivers off of the asus maximus hero x download page theres a new version of network driver there this solved the audio poping issues ive been having for months hope this helps
Was experiencing error aiosys and pexerror cant remember exact names but just uninstalled the new mei driver it and installed the 11.7.0.1040 via the install folder instead of the asussetup in the first folder and ran the mei update hey presto it wo...
running fine here on 1302 I know the 1202 bios version does an update and reboots 3 times think it updates mei or somert cos I said plz wait at top of a black screen when I flashed mine so try update previous version first