Update for Windows XP (KB935448)Brief DescriptionInstall this update to resolve an issue where the
Realtek HD Audio Control Panel may not start after you install security update KB925902 (MS07-017) and security update KB928843 (MS07-008).
To apply this hotfix, you must have Windows XP Service Pack 2 (SP2) installed.
Download : http://www.microsoft.com/downloads/details...&DisplayLang=en (http://www.microsoft.com/downloads/details.aspx?FamilyID=74ad4188-3131-429c-8fcb-f7b3b0fd3d86&DisplayLang=en)
More Information:The Realtek HD Audio Control Panel may not start, and you receive an error message when you start the computer: "Illegal System DLL Relocation"
QuoteSYMPTOMS
When you start a computer that is running Microsoft Windows XP with Service Pack 2, the Realtek HD Audio Control Panel may not start. Additionally, you may receive the following error message:
Rthdcpl.exe - Illegal System DLL Relocation
The system DLL user32.dll was relocated in memory. The application will not run properly. The relocation occurred because the DLL C:\Windows\System32\Hhctrl.ocx occupied an address range reserved for Windows system DLLs. The vendor supplying the DLL should be contacted for a new DLL.
This problem occurs when the Realtek HD Audio Control Panel (Rthdcpl.exe) by Realtek Semiconductor Corporation is installed.
http://support.microsoft.com/kb/935448/ (http://support.microsoft.com/kb/935448/)
Note: Only install this update if you are experiencing the above issue.
It is not necessary to install this fix. You just have to go to following site and update your Realtec drivers:
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=24&PFid=24&Level=4&Conn=3&DownTypeID=3&GetDown=false#High%20Definition%20Audio%20Codecs
If you already have installed the fix from Microsoft, you have to unintall it before updating the drivers.
Further details:
http://12078.net/grcnews/article.php?id=117834&group=grc.security#117834