In case you are not aware of this, but COM 1 and COM 3 share the same IRQ
(4), and COM 2 and COM 4 share IRQ 3. Therefore, you cannot operate COM 1
and COM 3 at the same time, nor can you run COM 2 and COM 4 concurrently. I
noted that you did not mention COM 2. Since it share IRQ with COM 4, the
absence of COM 2 in your list may be an indicator of a problem.

Looking at this from a somewhat different perspective - what do you want to
do with the COM ports? Since you have a modem on COM 3, your COM 1 should
NOT be enabled unless you intend to use it only when the modem is not in
use.

Hope this is of some help in your troubleshooting. Good luck.

Peter
-----------------------------------------------
The NoSpin Group
[log in to unmask]


> -----Original Message-----
> Device Manager indicates the modem is on COM 3 and the device
> status box indicates the modem is working correctly. Under
> "Ports" are COM 1, COM 4 and LPT 1. The Device Status of COM
> 4 states "this device cannot start." I have followed the
> "troubleshooter" process through, uninstalled COM 4 installed
> a new COM port, which always installs to COM 4.
>
> Jeff Long

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