Article ID: 265409 - View products that this article applies to.
This article was previously published under Q265409
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/EN-US/ )Description of the Microsoft Windows Registry
After you upgrade from Windows NT 4.0 to Windows 2000, parallel port (LPT) devices may not be detected. The port appears in Device Manager as "Parallel output only" or ECP 1.x with an exclamation mark in a yellow circle. The properties of the LPT device appear as:
The drivers for this device are not installed. (Code 28)If you click Reinstall Driver, you may receive the following error message:
To reinstall the drivers for this device, click Reinstall Driver.
The name is already in use as either a service name or a service display name.
This issue can occur if software that is included with the Hewlett-Packard (HP) PhotoSmart series of printers is installed on your computer before you upgrade to Windows 2000.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To resolve this issue, contact HP to inquire about the availability of a fix for this issue.
To work around this issue:
Article ID: 265409 - Last Review: September 11, 2011 - Revision: 5.0