Arduino can't be dected

By guys today a brought a UNO R3 and when I connect it to my PC it's COM port is not visible under serial ports and not even in device manager.....I have an old arduino and it is detected. Is the problem is with my arduino????


It is a guniune board and all the drivers are installed But when I insert the the arduino into my PC the sound that comes when inserting a removable device is also not heard by it is heard in my old arduino.

try to use another good usb cable or try this Arduino UNO and Mega Windows 7, 8, 10 USB driver Solved - YouTube

hope it works