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File Version : built by: WinDDK
Description : M-Audio Quattro Legacy
Copyright : Copyright 2003 MIDIMAN, Inc. All rights reserved.
Product Version :
Product Name : M-Audio Quattro
Company Name : Nemesis
Internal Name : M-Audio Quattro Legacy
File Size: 6656 byte(s) 6.512 KB
MD5 : 408e306f1d114d0ec0ed6c22aebb9aa1
SHA1: B94BE93B3C4D3B5F530D48FEFD3BB79690DDE043

Download m251.sys
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How to Install m251.sys
Repair Sys ProblemsFixing a corrupted or missing m251.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.