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File version : 1.00.14
Description : THOMSON Wireless NDIS 5.1 Driver
Copyright : Copyright (c) 2004, THOMSON Corporation
Product Version :
Product Name : SpeedTouch 120g Wireless USB Adapter
Company Name : THOMSON Corporation
File Size: 346720 byte(s) 338.608 KB
MD5 : 582e58c54b3b19d52eae5988291ad735
SHA1: 98DD3C2B4032EA7E603A8D8CB67B18772D1848D3

Download BT4501D1.sys
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How to Install BT4501D1.sys
Repair Sys ProblemsFixing a corrupted or missing BT4501D1.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.