Com port problem in XP Pro.

[Vincent Tumminello]

Have been using com2 for all my synching of my Palm Pilot but yesterday...no
sync.

I only have com2 and am unable to switch to com1. When I tried to setup my
com1 port in the bios, I was unable to boot at all and had to revert to com2
only, keeping com1 disabled. All the setup is fine and I can sync on my
laptop with no problem.

Both computers are using Win -XP PRO.

I think that something has happened to my com2 port on my desktop yet have
no other devices to use it to check it.

Any answers---greatly appreciated.

 

[Guest]

This is a wild guess, but it may apply here. I don't know
if they use a com port like a cell phone does. The only
way you can see the assingments is from a modem, they are
the only ones that have the advanced tab and com port
settings. Other things use them , but do not have a tab
to change them.

goto control panel> system properties> hardware> device
manager> modems, RT click properties> advanced tab>
advanced port settings and look at the com port settings,
see what shows ( in use ) Then see if the rest of this
post applies.

Com 1 and Com 2 are physical ports and have IRQ
assignments 3 & 4 are shared from 1 & 2.
From there the ports are virtual There 256 of them. The
problem is once they are assigned they cannot be deleted,
but they can be un-installed there a trick to do. I had a
laptop that I was having issues with and had gone up to
port 16, from failed installs. The program would not
recognize anything above port 4. When you install
something it is automatically assigned the first open
port, but it goes to the higher # ( if 5,6,7 are open and
8,9 are (in use) it will assign port 10 you install
something, thus the problem.

How I corrected it was to take a USB modem and keep
installing it and go into the device manager and change
it
to a port that showed (in Use) that I knew was not, then
when that port is accepted go back in and uninstall it.
Go to the advanced tab> advanced Port settings>
Com port # and then force it to the one you want out
select it> ok, then back out. Then un-install it,
reinstall it and repeat till you get them out.

 

[Vincent Tumminello]

<anonyLet me elaborate a bit more on the problem.
I do not have an internal modem and am using a
DSL modem connected to an ethernet port.
I have a physical com1 in the back of my computer but it is not being used.
When I do as you suggested I am told that com1 is in use and numerous other
com ports show up.
My com2 port comes off the mother board and is connected to it by a small,
flat cable, the other end of which is the physical serial port.
Everything stopped working as it had been. Even tried a system
restore....no help here.
Keep trying....

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