Automatic Login not working

I have 2 computers. The one that is hardwired has automatic sign-in working fine. My other machine, on a wireless router, will NOT use the auto-complete login AND every time I start the computer I have to enter my name in the Norton 360 login.  The other computer does not require that??

I have 2 computers. The one that is hardwired has automatic sign-in working fine. My other machine, on a wireless router, will NOT use the auto-complete login AND every time I start the computer I have to enter my name in the Norton 360 login.  The other computer does not require that??