How to fix "Ethernet" doesn't have valid IP configuration ?

Method 1 :

C:\Users\USER-PC>netsh winsock reset
C:\Users\USER-PC>netsh int tcp reset
C:\Users\USER-PC>netsh int ip reset

Method 2 :

C:\Users\USER-PC>ipconfig /release
C:\Users\USER-PC>ipconfig /flushdns
C:\Users\USER-PC>ipconfig /renew

Method 3 :

Check Your Ethernet Cable And Reboot Your Modem Or Wireless Router.