XP can be setup to only log into a domain and when it's not on the network, you see this.
Nothing is broken but maybe you didn't tell all here. That is, is this some used PC you obtained? If so, install the OS of your choice to fix it.
Can someone help me understand why I get,the domain enzo-8ec228 it is not available at the moment,when I type the password in the login? It's a acer of 2003 with windows xp.I tried with the administrator login and get the same thing