File version : 4.20.02.03 built by: WinDDK
Description : HP Tablet PC Key Button HID Driver
Copyright : Copyright 2002-2005 Hewlett-Packard Development Company, L.P.
Product Version : 4.20.02.03
Product Name : HP Quick Launch Buttons
Company Name : Hewlett-Packard Development Company, L.P.
Internal name : CPQBttn.sys
File Size: 12672 byte(s) 12.384 KB
MD5 : 60654343233616d5b1b6d1d87d83cd8c
How to Install cpqbttn64.sys
Repair Sys ProblemsFixing a corrupted or missing cpqbttn64.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.