"Your PC is offline"

I tried to login to my Windows 8 Acer Ultrabook this morning but was not allowed with a "Your PC is offline. Please sign in with the last password used on this PC." message.

My PC does login using my Windows Live account but I have been able to login in the past without an internet connection. Usually, when this message comes up, I'll re-type the password and login easily. Also, because I use an Ultrabook, I'm unable to use an ethernet cable to hook up to the net.


Help!