Is anyone else finding the below error in their event viewier under "Audit Failure" ? I found this post that describes exactly what I'm seeing and I'm wondering how many of us may be affected by this possible driver issue with the z77-v motherboards.
From here: http://vip.asus.com/forum/view.aspx?id=20120618012356036&board_id=1&model=P8Z77-V+DELUXE&page=1&SLanguage=en-us
This posting is mainly to share my own findings with others who may encounter a similar issue and who may wish to confirm their own results here.
It appears that the Realtek HD Audio Driver (V220.127.116.1170 for Windows 7 32bit & 64bit) that is currently included in the ASUS package for their P8Z77-V Deluxe mobos (and possibly others as well) causes code integrity issues when installed under the Win7x64 OS.
The specific and frequently repeated event log error messages are as follows:
Security Event ID: 6281
Code Integrity determined that the page hashes of an image file are not valid. The file could be improperly signed without page hashes or corrupt due to unauthorized modification. The invalid hashes could indicate a potential disk device error.
File Name: \Device\HarddiskVolume1\Windows\System32\sxs.dll
Note that sxs.dll is an essential and integral component of the Windows operating system itself and is not a audio driver file. Running Microsoft's "SFC /scannow" utility confirms that, in fact, there is no problem with that sxs.dll file. The only "solution" I've been able to find is simply to remove the Realtek audio drivers completely from the system.
Having tried several clean new installations, I can say definitely that those event log errors appear and reappear consistently whenever the Realtek drivers are installed. Fortunately, Win7's own audio drivers work fine by themselves.