Have you tried connecting to the web gui through different ports? you mentioned port 1 light is not coming on, is that the port you are trying to access the switch through? While connected to the CLI, what is the output from # show interfaces configuration? What are the clients IP settings at? 
My company bought a powerconnect 2824, anyway this is 1st time i configure Dell switch. I managed to setup initial configuration using cli mode, but after anyway I can't config interface only able to show information and also can't get into web interface with default setting or after setting.  What i did wrong?
Powerconnect 2824 Can't get into web interface