Michel Leclerc ,from what you are describing, it sounds to me like you are having a driver issue. that is the reason why you have devices with the question mark in the Device Manager. If you are sure that you have the right drivers for you touchscreen, I would delete the devices with the ? mark and then reinstall those. When it goes through the "found new hardware" phase, point it to the location where your drivers are stored. You can check for drivers for your Toughbook on here https://ftps.panasonic.com/
This is the link for legacy/discontinued Toughbook models. You can of course find more on here. Hope this helps.