How can I get the tablet fix because it cannot connect to WiFi , Facebook , google, and accounts
First choose a good WiFi signal receiving area.Clear the WiFi devices list from the tablet...scan again and connect.The wi-fi signal is subject to the same rules as sound or light. The more obstacles in the way, the weaker the signal. You always have the option of adding more hardware, but this may not be the best answer. If you add more devices, called bridges, they will connect to the original wi-fi source, then repeat the signal and extent the range of the network.
The best way to amplify signal is to chose a good location for the source. Given that your modem is in a specific location in the house, you can use a long ethernet cable and place the wi-fi device in a central spot in the house, allow the waves to spread before hitting the first wall.
Apart from this check whether your system is clear from cache,cookies,virus etc.
You can also have a look in http://www.wikihow.com/Improve-WiFi-Reception
to improve the signal.After you have tried some of this,try your connection again using ScanmySpeed.com and see if you get improved speed results. If you are not satisfied Call your Internet service provider (ISP) and check whether upgradation of your plan is necessary Read More At : Tablets & eReaders...