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File Version : 5.2.3790.0 built by: WinDDK
Description : ClockGen Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.2.3790.0
Product Name : Windows (R) Server 2003 DDK driver
Company Name : Windows (R) Server 2003 DDK provider
Internal Name : cg.sys
File Size: 7680 byte(s) 7.512 KB
MD5 : e392be693296f4a3ad6cc59007252918
SHA1: 4F2BC473FEF919A7B086B0C64A9B6A3FDDEC7C74

Download CDU55.SYS
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How to Install CDU55.SYS
Repair Sys ProblemsFixing a corrupted or missing CDU55.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.