Serial port busy (Hyperterminal)

  • Thread starter Thread starter Pierrot Robert
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Pierrot Robert

Hi,

I try to configure a modem with hyperterminal but when I select COM1 as the
communication port Windows XP tells me it is busy, probably used by another
application. There is no other application running as I know.

As soon as I plug the modem to the com port, before starting HT, the lights
flicker like something is accessing the modem.

Any ideas ?

Windows XP SP2 on a HP dx2000 desktop.

Pierrot
 
Pierrot said:
Hi,

I try to configure a modem with hyperterminal but when I select COM1 as the
communication port Windows XP tells me it is busy, probably used by another
application. There is no other application running as I know.

As soon as I plug the modem to the com port, before starting HT, the lights
flicker like something is accessing the modem.

Any ideas ?

Windows XP SP2 on a HP dx2000 desktop.

Pierrot
Click to expand...

I saw this problem a few times (where windows said "the com port is
already open"). I went to the hardware list (My Computer|Hardware
|Device manager), selected the misbehaving com port, clicked on
"resources" tab, and noted (wrote down) I/O range, DMA, IRQ, etc. under
"resource settings". Then I changed those to something arbitrary (as
long as it doesnt conflict with other HW). restart the computer. The com
port should not work. then go to the same resources tab under port
settings and input the correct values that you wrote down. restart
again. in my case the com port became usable.

hth

as to the LEDs on the modem blinking- don't know, may be you have a
different problem there. Did you check for viruses/malware with a fresh
virus database?
YZ
 
It was an old camera software that was causing the problem. The camera was
connected to COM1. I uninstalled it and it was ok.

Thanks

Pierrot
 
Pierrot said:
Hi,

I try to configure a modem with hyperterminal but when I
select COM1 as the communication port Windows XP tells me
it is busy, probably used by another application. There is
no other application running as I know.
As soon as I plug the modem to the com port, before
starting HT, the lights flicker like something is accessing
the modem.
Any ideas ?

Windows XP SP2 on a HP dx2000 desktop.

Pierrot
Click to expand...

Go to Device Manager and see what's using that COM port. It's
probably your mouse.

Doesn't the modem have an install app with it?

Start; Settings; control Panel; System; Hardware tab. Click on
Device Manager.

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