COM and LPT not found in Windows 7

Question

Hello, I am using an application that allows me to communicate with a USB device and retrieve data from it. For this, I need the port number that the device is connected to. The problem is that I don’t see the COM and LPT tab at all in my device manager. However, several suggestions have been made online: updating the BIOS, etc. Unfortunately, I have not been able to solve my problem. Even when I access the properties of my device, I get its location as "Port_#0002.Hub_#0001". This location is not recognized as a port by my application. My question is: how can I display the COM and LPT tab in Windows 7? Thank you in advance.    Configuration: Windows 7 / Firefox 38.0

didmed · Accepted Answer

Hi.  What kind of PC is it? A desktop or a laptop? What brand and model?  If there are physical COM (serial) or LPT (parallel) ports on the computer and they don’t appear in the Windows 7 Device Manager, it means they are disabled in the BIOS.  You need to: 1- Boot into the BIOS 2- Look for the COM and LPT ports and enable them. 3- Configure them  See you later!    -- If you need anything, just let me know!...

Ismo2012 · Answer

Thank you Didmed for your intervention. In fact, how do you access the BIOS? According to information on the internet, you need to restart the PC to access it. By doing that, I was able to access it, but I did not see any information regarding serial ports. What should I do? Here are the details about my PC: Name: HP Pavilion dv6-6005sf System: Windows 7 Home Edition  Thanks in advance!

didmed · Answer

Hi.  I don't know your PC's BIOS, but if you managed to boot into the BIOS (by tapping the 'Del' or 'Delete' key), you navigate (using the ? and ? keys) until you find a section like "Peripheral Configuration". Then you press 'Enter' and discover a menu with 'Serial Port A' (the serial port) and 'LPT 1' (the parallel port). There, for each of the ports, you need to select it (using the ? and ? keys) and press 'Enter' to access and modify the settings.  Info here: https://support.hp.com/fr-fr/document/c03854524  or here: http://hotline-pc.org/faq-windows/a/Le-Bios/108  Warning! Do not attempt to update the BIOS, as it is a delicate operation only necessary to resolve certain issues.  See you later!  -- If you need anything, let me know!...

didmed · Answer

and here: https://support.hp.com/en-us/document/c00219224#AbT3  See you later  -- If you need anything, just let me know!...

didmed · Answer

for "(using the 'up arrow' and 'down arrow' keys)" it should read (using the 'up arrow' and 'down arrow' keys)!!!!!!!!!  -- If you need anything, just let me know!...

didmed · Answer

Hi.  I don't know the BIOS under UEFI system, but here's some info from HP: https://support.hp.com/fr-fr/document/c00219224#AbT4  and you'll find a menu like this:    Catch you later  -- If you need anything, just let me know!...

COM and LPT not found in Windows 7

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