I have purchased a new Lenovo ideapad330 laptop with Windows 10 installed. It was working fine and no login window was seen before. It means when I switch on my laptop it goes directly to desktop. A virus attacked my laptop despite Macafee installed on it and there is a entry in proxy settings of the laptop. I opt to recover windows. After recovery, the start up screen shows a username and password screen. I have not created any username or password to login. Please help because it is not going further from this screen.