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File Version : 8.30
Description : Agere Windows Modem
Copyright : Copyright Agere Systems 2003
Product Version : 8.30
Product Name : Agere V.92 Data+Fax Modem Version 8.30
Company Name : Agere Systems
Internal Name : ltmdmnt.sys
File Size: 652497 byte(s) 637.209 KB
MD5 : 829ef680a308c12e2a80e5e0da0d958d
SHA1: DD2F91EA488225EEB9AD4964160AF05F8E58D911

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