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File Version : built by: WinDDK
Description : HpqKbFiltr Keyboard Filter Driver
Copyright : Copyright 2001-2009 Hewlett-Packard Development Company, L.P.
Product Version :
Product Name : HP Quick Launch Buttons
Company Name : Hewlett-Packard Development Company, L.P.
Internal Name : HpqKbFiltr.sys
File Size: 15872 byte(s) 15.512 KB
MD5 : 1210960ff8928950d2a786895b0c424a
SHA1: C44FD61DE4FC054892CF2453817B45A76B03F5EC

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How to Install hppausb0.sys
Repair Sys ProblemsFixing a corrupted or missing hppausb0.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.