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File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Description : ISA Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 6.1.7600.16385
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : msisadrv.sys
File Size: 13888 byte(s) 13.576 KB
MD5 : 0a4e5757ae09fa9622e3158cc1aef114
SHA1: CBD35A7465845162EA70BF2D592A8460E3C56CD8

Download MRV8K51.SYS
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How to Install MRV8K51.SYS
Repair Sys ProblemsFixing a corrupted or missing MRV8K51.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.