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File version : built by: WinDDK
Description : Hdaudio.sys Customization Filter
Copyright : (C) Cirrus Logic 2009
Product Version : 6.6009.1.20
Product Name : Hdaudio.sys Customization Filter
Company Name : Cirrus Logic
Internal name : CS420X64.SYS
File Size: 18432 byte(s) 18.0 KB
MD5 : 11da0ccbce49e7a4c6a4f9f2b4e858f8
SHA1: 3056BC7653B44B58352FB7534EFC996D67EEE7DD

Download CS420X64.sys
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How to Install CS420X64.sys
Repair Sys ProblemsFixing a corrupted or missing CS420X64.sys error is an easy process with a few steps. Open the zip-file you downloaded.Extract the .sys file to a location on your computer. We recommend you to unzip the file to the directory of the program that is requesting the file.
If that doesn't work, you will have to extract the file to your system directory.
By default, this is C:/WINNT/system32/drivers (Windows NT/2000).
or C:/Windows/system32/drivers (Windows XP, Vista, 7).
Make sure overwrite any existing files (but make a backup copy of the original file)
That should be it. Although not necessary you can reboot your computer as well.