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File Version : 3.50
Description : Cirrus Video Miniport Driver
Copyright : Copyright Microsoft Corp. 1981-1994
Product Version : 3.50
Product Name : Microsoft Windows NT(TM) Operating System
Company Name : Microsoft Corporation
Internal Name : cl54xx.sys
File Size: 47776 byte(s) 46.672 KB
MD5 : 998cd6193e3be7a1610d4acf005cd8b1
SHA1: BBC08F54BA7EAFC77B7AA9329362CC8A7A53D7FC

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