|Honestly, I have no experience with tablets. I would suggest you need to check and ensure your tablet's wireless interface is set to "obtain address automatically" (ie: from DHCP) and that your wireless profile on it is correct. If need be, delete the profile and try to reconnect.|
If that doesn't do the trick, your best bet will likely be to call the manufacturer's support line and ask them to help you.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.