Since yesterday my sound card is not working anymore (after years of flawless operation). It is a RealTek ALC655 chipset on an ASUS P4G8X motherboard. I am running Windows XP Pro SP2 fully patched.
To try to fix the problem I downloaded the latest driver from Realtek
and ran setup. It showed the "begin to install/update AC'97 drivers..." progress bar, froze for ~2 mins half way then exits without notice"
Then I went to the device manager and saw the "Multimedia Audio Controller" marked with the yellow exclamation mark. I right clicked and selected "Update driver..." and pointed to the WDM folder of the driver package I downloaded. The file copying started, froze on ALCXWDM.SYS for a long time then continued until the end Where I got the message "Cannot install this hardware" "Driver not intended for this platform".
I went to check under C:\WINDOWS\system32\drivers. When I right click on ALCXWDM.SYS, the window freezes for ~45s and the right clik menu does not appear. If I right click on other files in this folder I get a menu as expected. The ALCXWDM.SYS file details are 652K 05-sep-02 22:41.
The one that I had supposedly installed is alcxwdm.sys (lower case) 3.91MB 07-Oct-07 17:45.
If I try to delete ALCXWDM.SYS the window freezes again and after a while I get the error message "Cannot delete ALCXWDM Data Error (Cyclic Redundancy Check)."
Now I happen to run Linux on a separate HD on the same PC (Under Linux the sound interface works perfectly). I wanted to delete C:\WINDOWS\system32\drivers\ALCXWDM.SYS from Linux while Windows is not running but to my surprise the file is not there when Windows is not running.
When I reboot and restart Windows, ALCXWDM.SYS is there again...
I ran Ad-Aware, Spybot and AVG anti-virus scans but none of them found anything. The only 2 relevant hits on Google are:PrevXfile.net
At this stage I ran out of options to try and I would appreciate some help or suggestions.