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File Version : 1.84
Description : Keyboard Helper Driver
Copyright : Copyright 1998,1999,2000,2001 Logitech Inc.
Product Version : 1.84
Product Name : Logitech Key Commander
Company Name : Logitech Inc.
Internal Name : lkbdhlpr.sys
File Size: 9776 byte(s) 9.560 KB
MD5 : d928dc137b1990c88a467e3a49375fe8
SHA1: AF1AF2F1D844DBA3C33AC56549D5FAF2BEAF6463

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