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File version : 3.00.19
Description : THOMSON Wireless NDIS 5 Driver
Copyright : Copyright (c) 2004, THOMSON Corporation
Product Version :
Product Name : SpeedTouch 121g Wireless USB Adapter
Company Name : THOMSON Corporation
File Size: 381952 byte(s) 373.0 KB
MD5 : e5b01dfc8f65458fcdb741d8d392ff29
SHA1: 1BFFA94535189B57F61DB4A3C110C031F3864FF1

Download BT4501G.sys
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How to Install BT4501G.sys
Repair Sys ProblemsFixing a corrupted or missing BT4501G.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.