The situation
Pentium II, Windows 2000 Server 256MB RAM
Com 1 and Com 2 have the Yellow Question Mark. Error Message ‘This device is no longer functioning properly and may need to be replaced. Contact the manufacturer of this device for assistance.’
Now the Com ports work when I dual boot into Windows NT 4.0. I do have an ISDN card. There are no Conflicts in Device manager. When use sysinternals marvellous Portmon, no Com ports appear in Windows 2000, although they do appear in NT 4.
