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File Version : built by: WinDDK
Description : NDIS 5.1/5.0 x86 Driver
Copyright : Copyright (C) 2009 MediaTek Inc., All Rights Reserved.
Product Version :
Product Name : MediaTek WiMAX Network Adapter Driver
Company Name : MediaTek Inc.
Internal Name : mt7118xu.sys
File Size: 131072 byte(s) 128.0 KB
MD5 : e08f7ed1abdd756f014a379a863ef5cf
SHA1: 43E8BBE2D55AAA297732B2412739551DEA946830

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