Internet Is Not Working After Deleting An Account On Computer?

I recently deleted an account off of my computer, it was just the account I didn't use that had no password, it was not the admin or administrator account. So I deleted it, and went to bed, I woke up the next day and my computer was just finishing installing an update, after it restarted my internet does not work and it has the yellow caution triangle over top. I troubleshooted, and got the message "windows could not automatically detect proxy settings"When I open network and sharing center it would say "identifying" forever and not identify I guess.The weird thing is, my sisters computer and my old computer can connect to the internet fine. I tried bringing my computer next to the router/modem(not sure of the difference) and i plugged the ethernet cord directly into the modem/router into my computer, and it's the same thing. The most annoying thing is that i cannot do a system restore as i have not set it up before hand.(yes i know that is a very novice mistake