COM address conflict

Posted on 1999-11-11
Medium Priority
Last Modified: 2012-05-05
When I boot my computer I get a 3f8h Com address conflict.
I have to press F1 key to continue to the boot process.

How do I resolve this conflict?

The computer is AT&T and I have added 56kflex Zoom modem.
Question by:elombard
  • 2
LVL 27

Expert Comment

by:Asta Cu
ID: 2200963
The Modem could be hard-wired/jumpered to use a specific IRQ/Com port/Address assignment via Jumper, and your BIOS may be set to PNP OS Yes, and duplicate com port assignments results.  Did you receive any documentaiton to verify info on this modem as to what default settings are, etc?

Have you checked those possibilities?  When your system first boots, you can pause to read details and how to access your BIOS to check settings.

This also may apply, unclear about your specific modem model info.... http://support.microsoft.com/support/kb/articles/Q142/2/78.asp
 Windows 95 Updated Modem .inf Files Readme.txt File

LVL 27

Expert Comment

by:Asta Cu
ID: 2200976
Modem troubleshooting link helps, though Windows 98 geared, not much different in 95 as I recall.  I've also found that when booting in SAFE MODE, duplicate and erroneous com port assignments are reflected in device manager, not shown in normal mode.  At any rate, were that the case, I'd remove ALL occurrences or duplicate and/or erroneous assignments.



Accepted Solution

Shep earned 100 total points
ID: 2201622
your modem is using a com port your bios is set to comfigure.
disable the 3f8h Com address in bios, it will not effect your modem


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