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File Version : 5.1.2600.0 (XPClient.010817-1148)
Description : Serial Mouse Filter Driver
Copyright : (C) Microsoft Corporation. All rights reserved.
Product Version : 5.1.2600.0
Product Name : Microsoft(R) Windows(R) Operating System
Company Name : Microsoft Corporation
Internal Name : sermouse.sys
File Size: 17664 byte(s) 17.256 KB
MD5 : 8922400aa4a9ccc501e32155e4af8b58
SHA1: C2F17DA68CD0F258C3A8BDF9910BAFB47647F084

Download s125whnt.sys
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How to Install s125whnt.sys
Repair Sys ProblemsFixing a corrupted or missing s125whnt.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.