How to Resolve IRQ Conflicts in Serial or Parallel Ports

By eHow Computers Editor

Rate: (0 Ratings)

If you've installed a new serial or parallel card and it's not working, the new port may be trying to use an IRQ setting assigned to an old port. You can disable the existing ports via the Control Panel.

Instructions

Difficulty: Moderately Easy

Things You’ll Need:

  • Serial/parallel Cards

Step1
Click Start, point to Settings, and then click Control Panel.
Step2
Double-click System, and then click the Device Manager tab to display all devices.
Step3
Click the (+) sign next to Ports (COM and LPT) to display current ports. An exclamation point (!) in a yellow circle will appear next to the names of ports that are conflicting with the new ports.
Step4
Double-click the names of the conflicting COM or LPT ports.
Step5
Click the check box by "Disable in this hardware profile."
Step6
Move any devices from the conflicting ports to the new ports.
Step7
Click OK, and then restart the computer. Windows should now detect the new serial or parallel ports and the attached devices.

Comments

| View All Comments
Anonymous

Anonymous said

Flag This Comment

on 11/22/2005 It's much easier, while in System Properties, to simply remove ALL the ports, then reboot and allow Windows to reinstall them. Windows itself should assign non-conflicting resources for the ports. If that fails, you can disable some.

View All

Post a Comment

POST A COMMENT

Request a New How-To Article

Looking for more How To information? Chances are there’s an eHow member who knows how to do what you’re looking to do. Submit an article request now!

eHow Article:  How to Resolve IRQ Conflicts in Serial or Parallel Ports

eHow Computers Editor

eHow Computers Editor

Category: Computers

Articles: See my other articles

Related Ads