Different behavior on two accounts suggests that there's a problem with some system components. You can try to fix it by typing cmd
in the Start screen, right-clicking the item that appears and choosing Run as Administrator. An elevated command prompt will open, type sfc /scannow
and press Enter. Wait until the scan is complete.
Then you should be able to access connection's properties this way: click the network icon in the notification area (it's a signal strength indicator icon if Wi-Fi is enabled). A pane with connection list will open. Right-click a connection there and choose Properties.