I have HP D530 and I am using an application that uses com1 as its output interface. Com1 is dead now and I need to make com2 is output interface for my program. How can I do that?
Kindly note that my application doesn't support com change. Also I tried to change the address of each com from the bios (That I give com2 the address of com1) but nothing avail.

Also, I want to know, How the computer know that com1 is com1 and com2 is com2.

BRGDS
Mahmoud Youssef:)

You need software such as this: Best free serial port redirect downloads. With COM Port Splitter you can manage real and virtual ports as you need. Let your serial applications operate via TCP/IP networks. (http://www.freedownloadmanager.org/downloads/serial_port_redirect_software/)

Above is a good option, below are steps that should work out

Right click on My computer
-choose properties
-go to hardware tab
-click device mgr
-click + sign next to Ports (COM and LPT)
-double click on COM1
-in dropdown box on bottom (Device Usage), choose
Do not use this device (disabled)
-Click OK


Now close that window

Now double click on COM2
-Go to Port Settings tab
-Now click the Advanced button
-Change to COM1 and click OK

Now this should make COM2 be recognized by the system as COM1

Reboot computer and give a try, should work

If not, you can always switch back