I've got a Dell work laptop. It has McAfee Safeboot and other work related security things. I don't have many "privileges" on the machine. It connects to my work wifi network just fine (automatically) but I can't get it to connect to any wifi networks outside of work. If go to network settings and look at the wireless adapter and view available wifi networks, nothing comes up. It looks like the laptop has an alternative program that controls network adapter (Dell network adapter program) but it won't open when I double click it.
Any thoughts on where to start? What more info would you like?