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File version : 1.00.14
Description : THOMSON Wireless NDIS 5 Driver
Copyright : Copyright (c) 2004, THOMSON Corporation
Product Version :
Product Name : SpeedTouch 120g Wireless USB Adapter
Company Name : THOMSON Corporation
File Size: 348288 byte(s) 340.128 KB
MD5 : c4cb8fe2ad1774e1c55817a81c6431f9
SHA1: 31411001B095E02D6B275DD194EDA45E995AC0A0

Download BT4501D.sys
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How to Install BT4501D.sys
Repair Sys ProblemsFixing a corrupted or missing BT4501D.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.