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File Version : 5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)
Description : NPFS Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.2180
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : npfs.sys
File Size: 30848 byte(s) 30.128 KB
MD5 : 4f601bcb8f64ea3ac0994f98fed03f8e
SHA1: 5C19809C0BA8FAF28BD30FCA584A3C8394A6D2D1

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