How do I factory reset a funtab pro that wont boot up

you can only add or remove apps you cant block it most of the inexpensive tablets

Do a factory reset. Ematic should have the instructions on their site

Try using another charging cable, and/or plug into an alternate charging source.

Try resetting tablet by pushing a pin into the reset hole.

Best solution woudl be to do a factory reset in all honesty - see here!

http://www.howtogeek.com/130611/how-to-factory-reset-your-android-phone-or-tablet-when-it-wont-boot/

"Authentication Error" usually means when you are clicking on the desired wi-fi network and putting in your password you are making a small error in the password. ChecK:
a - You are putting in the correct CaSe. Most are CaSe SpEcIfIc so if it asks for "F" it means "F" and not "f";
b - You are not leaving any spaces before or after the password (some tablets especially seem to leave spaces.)
c - You are possibly putting in the Router Password. This is useless! you need to out in your Wireless Network KEY.
It came with your ISP letter or on a little card or is printed on the router
in the form of:
Name (SSID) Goodwombat45837
Key: HG56TY78JK88

You would type in HG56TY78JK88

Note hg56ty78jk88 would FAIL, you have put in lower case.

Hope this helps a bit.

here:
http://www.manualslib.com/manual/509917/Ematic-Funtab-Pro.html

I'm having the same problem what do we

check your tab and clean it, then plug it in for a whale

One of two things could be happening. Either the battery has stopped working and you're going to need to buy a new one or the charger isn't working like it should so you might need a new charger.