Microsoft has written an article entitled, "Windows NT Service Packs and OEM drivers", that begins with:
"After you install Windows NT Service Packs (SPs), you may need to reinstall customized Windows NT components or drivers provided by original equipment manufacturers (OEMs). The following message may be displayed during Service Pack Setup:
Windows NT Service Pack Setup Path\Filename Your computer vendor installed this file on your computer. Do you want Service Pack Setup to replace this file?"To read the entire article, see Q139815.