Arduino not detect (ch340 usb to serial)

i use the library GitHub - gmag11/NtpClient: NTP client libary for sync ESP8266 time via WiFi , Arduino can not detect com port , i use ch340 usb to serial but my win10 is detect , i use two computer is same problem

seyf:
i use the library https://github.com/gmag11/NtpClient , Arduino can not detect com port , i use ch340 usb to serial but my win10 is detect , i use two computer is same problem

What does using a library have to do with whether Windows 10 recognizes whether the Arduino is connected or not?

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i use win7 and win10 ids same problem

Did you install the driver?