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File Version : 4.00
Description : NCR Standard Miniport 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 : ncr77c22.sys
File Size: 19984 byte(s) 19.528 KB
MD5 : 1a63721c995f31b680b69261fd2fab34
SHA1: 974DD2EB0B788CFA61DD86D13F8E414B6468992F

Download NB815usb.sys
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How to Install NB815usb.sys
Repair Sys ProblemsFixing a corrupted or missing NB815usb.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.