This is the post for Dayyan who is now facing this issue currently,hope he will slve using this Blog. After installing Arduino IDE,Portable or normal version.if no device is detected, Go to Control Panel-> Device manager or Goto Start menu and search for "devmgmt" click device manager if you see USB2.0-Serial on the Other Devices/Unknown Devices,its because of Duplicate China Chip instead of original FTDI,Because windows now stopped support for it. Solution: You need to install CH340G driver link for downloading driver if download doesn't work try to download it from the webpage Link ,It will be in chinese just click the download this,Hahahaha For more Details -> Article Related to Serial port of Arduino I have found this after 5 hours of Debugging Feel free to Comment..................... Learn Joyful.......