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File Version : 4.10.3022
Description : Crystal PCI WDM Audio Driver
Copyright : Copyright (C) Crystal Semiconductor Corp. 1991-1999
Product Version : 4.10.3022
Product Name : Crystal WDM PCI Driver
Company Name : Crystal Semiconductor Corporation
Internal Name : cwcwvtbl.sys
File Size: 27552 byte(s) 26.928 KB
MD5 : c31c7f0e927b616a022c9e62e1bb672f
SHA1: 6A7049A26F0E0B5984034A02F33392E83494FE7C

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How to Install cwcfm.sys
Repair Sys ProblemsFixing a corrupted or missing cwcfm.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.