board trigorilla 2560, windows 10 ; arduino ide doesn't recognize the port, so I do suppose that's a driver issue
opening the device manager, nothing new is shown; manually installing a new com port, it will be always present no matter if the usb is plugged in or not, but if it's plugged in and then check for hw changes, it will open the folder where the com is, if it's not, it will not; so I do suppose that it's working? by uninstalling it and plugging the usb will change nothing; the usbs do work, I've already tries with other ports btw
by trying to manually install the driver it will fail by either stating that the best driver is already installed, or outputting error 34, in both cases the ide is still not able into recognizing the port
What does Windows device manager say about the board? Is it identified as an Arduino?
There are a few places to look for the new device in Windows device manager if it's not automatically detected.
Ports
Universal Serial Bus Controllers
(Not sure if there is a section for) Unknown devices
Did the board work in the past? Or is this the first time that you try it out?
Did you remove any connections from the board except for the USB?
Do you have other boards (e.g. Uno)?