can't find VCP in device manager ( it was before! )

[medyassinetouati]

Hello, i have an issue with my board's vcp : stm32f407g-disc1 / MB997E

the st link port works perfectly , but the micro usb port ( vcp ) is not working , 
and yes i'm sure that it's a data cable not only charging, 
the interesting point is that before few months it was working on my laptop with the same cable, i can find two of them st-link vcp , and vcp , but now when i plug in the both cables , only i get st-link in the device manager,
i didn't make any update or removing drivers or that kind of stuff

here is what it's supposed to be in the device manager list : 

and here is what i get now : ( only the st-link one )

any idea how to solve it ? or if there's a specific driver that needs to be reinstalled or idk..

[Gyessine]

Hello @medyassinetouati 

I tried to replicate the issue, but I couldn't reproduce it

I attached the whole project as a zip file 

 run the project and check device manager for your VCP number and visualize the result using your favorite serial monitor tool (example: putty, teraterm ...)

[Andrew Neil]

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@medyassinetouati wrote:

 now when i plug in the both cables , only i get st-link in the device manager,..

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Have you changed the code on the discovery board?

Does the PC see anything at all when you plug it in?

micro usb connectors can be quite fragile - check carefully for damage & failed connections ...