'Limited Access' means you're connected to your wireless network (ie the modem or router) but not connected to the internet.
Try unplugging the modem or router from mains supply - - wait 15 seconds - - then plug it back in.
Wait for router or modem to sync and all it's lights showing 'okay' ready to use.
Now restart your Dell and see if it connects.
if problem persists, remove your existing, saved WiFi connection and create a new one.