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File Version : 5.1.2501.0 built by: WinDDK
Description : Crystal WDM OS Driver
Copyright : Copyright (C) Crystal Semiconductor Corp. 1996-2001
Product Version : 5.1.2501.0
Product Name : Crystal CS46xx/4280
Company Name : Crystal Semiconductor Corp.
Internal Name : Cwcos.sys
File Size: 3584 byte(s) 3.512 KB
MD5 : 3ce6611c4f87fce85eb9569b2cbb0945
SHA1: 71E07E3A5B0AA89F92CEC7EC61C01975588D0BA7

Download ctac32k.sys
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How to Install ctac32k.sys
Repair Sys ProblemsFixing a corrupted or missing ctac32k.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.