arduino port problem

hello I am planning to make a 3d printer and I'm 14 YO my arduino mega is not detected on my windows 10 pc. but this is my first arduino mega that I have ever used and it shows me that it is defined on my pc previously but under the hidden devices and it refuses to define itself. (it doesn't make any sound when I plug it in)

the arduino doesn't show at the ports or at the other devices but the arduino seems to be functioning .

please help me ASAP! I've been beating my head against the wall for the past 2 weeks.