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File Version : 5.20.3032.2
Description : USB RF-Mouse filter driver
Copyright : Copyright (C) A4Tech Co.,Ltd. 2001-2006
Product Version : 5.20.3032.2
Product Name : A4Tech Mouse Driver
Company Name : A4Tech Co.,Ltd.
Internal Name : Aufilter.sys
File Size: 10240 byte(s) 10.0 KB
MD5 : 380346cab42b7a0095450a79dd0e8120
SHA1: E04EBDA044AA9F8D816F924BD456BE22DD4E4F76

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