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File Version : 6.1.7600.16385 (win7_rtm.090713-1255)
Description : Protected Environment Authentication and Authorization Export Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 6.1.7600.16385
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : PEAuth.sys
File Size: 586752 byte(s) 573.0 KB
MD5 : 9e0104ba49f4e6973749a02bf41344ed
SHA1: 2F45255A85CDE21BDE3720F129BB853A0F8A0937

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