So my work computer has a weird problem. When I shut it down at night and then the next morning come in and turn it on the internet is not recognized so I ALWAYS have to restart it to get it to work...what could be causing this?

Mind you it is only when it has been shut down for a bit. It is a Toshiba Tecra laptop with the internet hardwired in not through wireless...

any ideas? My IT department is stumped.