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File Version : 4.00
Description : Generic MPU-401 driver
Copyright : Copyright (C) Microsoft Corp. 1981-1996
Product Version : 4.00
Product Name : Microsoft(R) Windows NT(TM) Operating System
Company Name : Microsoft Corporation
Internal Name : mpu401
File Size: 11280 byte(s) 11.16 KB
MD5 : bd0d0cf348bd6db1a1752eaacda5c427
SHA1: A2D85F0D847C3DB10C2C30072CFFF1C16DED9485

Download _MPU401.SYS
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How to Install _MPU401.SYS
Repair Sys ProblemsFixing a corrupted or missing _MPU401.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.