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File Version : 5.1.2600.0 (XPClient.010817-1148)
Description : Nt Apm Legacy Battery Driver
Copyright : Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.0
Product Name : Microsoft Windows Operating System
Company Name : Microsoft Corporation
Internal Name : apmbatt.sys
File Size: 6272 byte(s) 6.128 KB
MD5 : 54494f84e33b791277fff5ae1703ba78
SHA1: 68D3F545D3FB20AD072AF2487573C416065DFAD6

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