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File Version : 7.54.07
Description : HSP Modem Serial Device Driver for NT 5.0
Copyright : Copyright (C) PCTEL. 1994-1998
Product Version : 7.54.07
Product Name : HSP Modem Serial Device
Company Name : PCTEL, INC.
Internal Name : Ptserial.sys
File Size: 128286 byte(s) 125.286 KB
MD5 : 4ea68256ba3ddfe5238e35af71c529aa
SHA1: 0F9A62AA5938D774CB750A0745A2AD69163720E0

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