Hi guys i am new here but i need your help,here is my situation ,i am using wireless internet and i am connected to my ISP ap over Mikrotik 5GHz antena problem is,3 day's ago everything worked fine but i disconnected my antena and switch from power and now i can't connect to internet over switch and before i could do that,now i connect my antena and switch and LED light's on switch are blinking normal ,but when i try to connect my computer and switch i get error something like"Unidentified network,and LAN dosen't have valid ip configuration,i don't have ip address from and i should obtain ip address automatically,do i need to reinstall my drivers of network card can u please help me sorry for my bad english,what i need to do to have internet again over switch ,why i can't get internet access over internet maybe switch can't obtain ip address .