Solved

Problems with PC start-up

Posted on 1998-10-30
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Last Modified: 2010-04-27
This isn't a major problem, but still is annoying. Every time I start up my computer, after the first 20 seconds, comes an error message "Conflict I/O com port 2". To continue I press F2. My modem is connected to Com Port 2 but works fine. When I disconnect the modem and start the computer there is no error message. Technically there is no problem other than this pointless message. Is there any way I can avoid this happening but keeping the modem installed ? There isn't any other port that the modem can be connected to, and at the momemt all other ports are free.

I don't think it is the modem itself because it was used on a previous computer with no apparent problem.

Thanks to whoever helps me.
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Question by:cartti
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Expert Comment

by:rmarotta
ID: 1128055
cartti,
I assume you're using an internal modem.
I think the conflict is recognized at bootup by the BIOS because the built-in serial port is set for COM2, and the modem is there as well.
Try to disable the serial port, or change its address/IRQ in your CMOS setup.
Regards,
Ralph
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Author Comment

by:cartti
ID: 1128056
I disabled the serial port, but alas still the same problem
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Expert Comment

by:rmarotta
ID: 1128057
Are you using an external or internal modem?
Interesting why the error would be reported with the COM port disabled.....
Did you double-check that the correct port was disabled?
Ralph
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Author Comment

by:cartti
ID: 1128058
Sorry for the misinformation. The actual message was Conflict I/O Port. It is an internal modem. COM2 is the port currently used by the modem. I'm currently at work so obviously I haven't got access to the computer. I'll check it out tonight.
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Expert Comment

by:rmarotta
ID: 1128059
Okay, no rush.
Is the error message generated by the BIOS at bootup, or after the operating system has loaded?
What is your operating system?
Ralph
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Author Comment

by:cartti
ID: 1128060
Sorry for the misinformation. The actual message was Conflict I/O Port. It is an internal modem. COM2 is the port currently used by the modem. I'm currently at work so obviously I haven't got access to the computer. I'll check it out tonight.
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Author Comment

by:cartti
ID: 1128061
Sorry for the misinformation. The actual message was Conflict I/O Port. It is an internal modem. COM2 is the port currently used by the modem. I'm currently at work so obviously I haven't got access to the computer. I'll check it out tonight.
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by:cartti
ID: 1128062
I don't know what BIOS means, though the message comes up a few seconds after checking the memory. The computer has a Windows NT platform (Is that what you mean by O/S ?).
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Expert Comment

by:rmarotta
ID: 1128063
cartti,
A brief explanation:
 BIOS is a set of instructions that the computer follows when first powered on.  It performs a self-check of the computer's installed hardware.
 CMOS setup is a built-in utility that allows you to configure the hardware that's installed in your computer.

You said:
> "I disabled the serial port, but alas still the same problem"

How did you disable the serial port?

What I was suggesting earlier was to go into your CMOS setup and disable the port.
(Enter CMOS setup by pressing some key or key-combination just after powering on the computer.)
On many machines, you press the Del key when the memory-check is being done on the screen.
Regards,
Ralph

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by:cartti
ID: 1128064
From what you have said, I must have entered the CMOS setup. When going through the menus, it offered me the choice of enabling/ disabling the serial port. It did not however specify which one, but I still toggled it to disabled which did not stop the message appearing again the next time I re-booted the machine.
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Expert Comment

by:rmarotta
ID: 1128065
Most machines have two serial ports built into the motherboard.
They can be labeled as "Serial A & B", "COM A & B", or other such designation.
Perhaps you disabled the wrong port?
Anyway, it will be easy to check when you get back to the computer.
Let me know what you find, or, if you need more.
Ralph
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Author Comment

by:cartti
ID: 1128066
From what you have said, I must have entered the CMOS setup. When going through the menus, it offered me the choice of enabling/ disabling the serial port. It did not however specify which one, but I still toggled it to disabled which did not stop the message appearing again the next time I re-booted the machine.
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Accepted Solution

by:
ITjan earned 20 total points
ID: 1128067
Have you tried changing the COM port designation on the modem itself?  I think that this would much easier than trying to go in the CMOS setup and disabling the serial ports, because you could change more than you want to in the BIOS (just my opinion).  Most internal modem allows the user to set the COM port number (anything from Com1, com2, com3, and com4).  Look on the modem and see if you can find some pins with some COM ports designation and change that to COM 4.

It should look something like this:
COM
1234
:[:]::

When you find it, look for the "cover" that is joining two pins at COM 2 and pull that up and move it to COM 4.  It should now look something like this:
COM
1234
:::[:]

I hope this helps.

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