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File Version : 5.1.2600.0 (xpclient.010817-1148)
Description : NetBEUI Frames Protocol Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.0
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : nbf.sys
File Size: 98176 byte(s) 95.896 KB
MD5 : c087dd7fa47c4a43683df764fbfa30a7
SHA1: 233DFC9E9A807E557E18CB19A6A657875AB4072C

Download mv91xx.sys
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How to Install mv91xx.sys
Repair Sys ProblemsFixing a corrupted or missing mv91xx.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.