I've installed windows 7 via WDS. All drivers and some recommended softwares installed properly. I was deleted all local user accounts and I logged out. Then i was trying log into my domain like domain.com\user with password, it responsed : user name or password incorrect. I think it can't connect our domain. What should I do?
You're missing some details with your question.
Did you join it to your domain / try re-joining it? Does the computer show up in ADUC? Are you 100% sure your domain password is correct?