I wanted to start my first arduino project with a Seeeduino V4.2. So i ordered one, connected with USB mini to my Windows 10 pc and installed the arduino software. But since then, my computer wont find the arduino. I installed the driver, i installed the V4 driver, but nothing. Not in the device list, neither I can chose the port in the software. So, I ordered another one to be sure, that the first one isnt broken. Same problem. Any idea?