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File Version :
Description : USB 2.0 Port Enumeration Driver
Copyright : Copyright (C) OMI 2001
Product Version :
Product Name : USB2.0 Port Enumeration Driver
Company Name : OMI
Internal Name : NUSBD.SYS
File Size: 41416 byte(s) 40.456 KB
MD5 : 363fd008260ada9a4f1a2f24a01c459c
SHA1: BFA953EA9643702868B12A3CC4088B7B9D31A765

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