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File Version :
Description : Kernel Mode Audio Driver
Copyright : Copyright(c) 1995-2000 Avance Logic, Inc.
Product Version :
Product Name : Avance AC97 NT40 Audio Driver
Company Name : Avance Logic, Inc.
Internal Name : alcxnt.sys
File Size: 621788 byte(s) 607.220 KB
MD5 : d9d22a99d67dddea59b2fbd6f16654a0
SHA1: EC51A283D6C477E814B2DE60EDECC249A3128C53

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How to Install ALCXNT.SYS
Repair Sys ProblemsFixing a corrupted or missing ALCXNT.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.