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File Version : 5.505.1004.2002 built by: WinDDK
Description : Realtek RTL8139/810x Family NDIS 5.1 Drv
Copyright : Copyright (C) 2002 Realtek Semiconductor Corporation
Product Version : 5.505.1004.2002
Product Name : Realtek RTL8139/810x Family Fast Ethernet NIC
Company Name : Realtek Semiconductor Corporation
Internal Name : R8139n51.sys
File Size: 46976 byte(s) 45.896 KB
MD5 : 2ef9c0dc26b30b2318b1fc3faa1f0ae7
SHA1: E6B83C5835A999FE606A2CCC923E046362505A88

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