Windows NT4 does not support plug-and-play devices out of the box, but it can be configured to a least partially support some PnP features with a little help.
Find the directory on your Windows NT CD-ROM called \Drvlib\Pnpisa, then open the directory for your system type (standard PC's are x86 or i386). In this directory are two files. To install plug-and-play support, right-click on the file called 'Pnpisa.inf' and select install.
Restart Windows for the changes to take effect.
Note : Windows NT should now detect PnP devices, but you may have to configure the settings manually.
Disclaimer : Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.
Enable Plug and Play on Windows NT (Windows NT 4.0)