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PCI Modem and com port assignment

By rwwone ·
I am trying to install a PCI Modem in a HP Vectra under Windows 98. However, everytime I try to install it, the system automatically assigns it to COM Port 4. There is no COM Port 4 and therefore, when you run a diagnostic on the Modem you get a Coul not open Port Window. I have tried installing COM Port 4, but it reinstalls the modem on COM Port 5. I have tried setting the IRQ in the BIOS. Still no luck. If you have overcome this problem before or know how to resolve it I would greatly appreciate it.

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PCI Modem and com port assignment

by opatzg In reply to PCI Modem and com port as ...

For a work around on modems I've always disabled the serial ports in BIOS if I didn't need them, then the modem can be loaded in on com1 or com2 where most of the diagnostic software will recognize it and it generally just works better.
Good luck

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PCI Modem and com port assignment

by rwwone In reply to PCI Modem and com port as ...

I already tried that and I am still having the problem whereby the modem automatically installs to a non-existent COM Port

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PCI Modem and com port assignment

by TheChas In reply to PCI Modem and com port as ...

PCI Winmodems always install to virtual COMM ports.

The first thing I do when I have problems is go to Control Panel / Modems, and remove ALL modems.

Shut down, remove the modem card, and re-boot clean twice. Check for driver remnants after the first boot.

Next, many winmodems require that you install the driver before installing the modem.
If so, install the software, and shut down the PC.
When I install the modem, I avoid the shared PCI/ISA slot or shared PCI/AMR slot if at all possible. Using either can cause some strange conflicts.

Oh, Make sure that you have the latest drivers from the modem mfgs web site.

Finally, I have had several instances where a particular modem chipset would not function with a particular motherboard.
Switching to a modem with a different brand of chip on it cured the problem every time.
I have seen this with Lucent / Ageere, PC-Tel, and Intel chipset modems.

Chas

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PCI Modem and com port assignment

by rwwone In reply to PCI Modem and com port as ...

Thank you for the in depth information. I also have had very difficult times with Win Modems which is why I never recommend them for my clients. I did solve my problem by replacing an ESS modem with a US Robotics. No problems. Easy install. Satisfied customer. Enjoy the points.

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PCI Modem and com port assignment

by rwwone In reply to PCI Modem and com port as ...

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