Com Port

[Bahco]

I have bought a USB adapter and installed it as per instructions. However I keep getting the error message..........

"Fail to open Com Port. last error :the system cannot find the file specified."

I have designated Com 1 but no joy. Does anyone know why this is happening please?

 

[Estrella]

In device manager what comm port does it list for that device ? I would wager it isn't Com 1

EDIT: can you tell us what the USB device is ?

 

[Bahco]

Hi Boxcleva

In Ports ( COM & LPT) it says Prolific USB to Serial Comm Port (COM 1) and the USB device is a USB SERIAL ADAPTOR which I have installed the drivers that came with the disc.

Any ideas how to configure my USB port as COM port for RS232 communication pls,

Thanks

 

[ToffeeNick]

I had this problem myself a while ago and i can't remember how i fixed it but have a read of this and see if it works. are you using Vista because that's what OS i had the problem with.

 

[Bahco]

It is Vista

 

[Estrella]

It is Vista

Is the device listed as compatible with vista on the packaging/instructions ?

Have you tried changing the comm port ?

 

[Bahco]

Is the device listed as compatible with vista on the packaging/instructions ?

Have you tried changing the comm port ?

Yes to both.

 

[daozen]

I'd try uninstalling the stuff you installed from the CD and just plugging it in to vista and see if vista auto-detects it.

 

[ToffeeNick]

could you check this Bahco - are serial ports enabled in your BIOS?

 

[Bahco]

could you check this Bahco - are serial ports enabled in your BIOS?

How do you do that pls

 

[Spark123]

I doubt that would matter as the BIOS will only affect a com port if it is on the motherboard, a USB one is external.
Can you go to device manager and see if there are any yellow triangles?
Also have a look in the Ports (Com & LPT) to see if something else is using Com 1.

 

[Bahco]

I am getting a yellow triangle by my SM Bus Controller and it says there is no driver installed.

What is a SM Controller and where would I find a driver?

 

[Trazor]

I am getting a yellow triangle by my SM Bus Controller and it says there is no driver installed.

What is a SM Controller and where would I find a driver?

If you are in device manager, right click the SM controller, and allow the internet to find and install a driver.