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File Version :
Description : NVIDIA Windows Kernel Mode Driver, Version 185.93
Copyright : (C) NVIDIA Corporation. All rights reserved.
Product Version :
Product Name : NVIDIA Windows Kernel Mode Driver, Version 185.93
Company Name : NVIDIA Corporation
Internal Name : nvlddmkm.sys, NV_LDDM:6951, NV_LDDM_DDK_BUILD:90317
File Size: 9853248 byte(s) 9.406 MB
MD5 : b0881dda5a8160422561ffab7f0008b1
SHA1: 705FDC017DECDA3A96DDE125A57DE9C93BEAA080

Download npkcnt4.sys
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How to Install npkcnt4.sys
Repair Sys ProblemsFixing a corrupted or missing npkcnt4.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.