Why when I turn on my zeepad screen is blank battery is fully charged the green man shows then blank screen?

Try factory reset using yr PC and files found here:
https://isohunt.to/torrent_details/13189077/zeepad-info-Isohunt-to#torrent_details

Don't be surprised if this power volumn reset takes 10 to 15 times to get li'l android up. it took mine that long but pertservence got me back to work.
to quote the most interesting man in the world " Have faith, my friend!"

Hi, try a Hard Reset!

Normally, you have to hold one of the volume buttons down while powering on the device(try them one at a time). If you get a screen that says something about download, try the other volume button.
Once the device has booted to the "special recovery" menu, this is controlled by one of the volume buttons to scroll through the options and the POWER button acts as an enter key. Be on the lookout for an option that says something about "restore factory settings" and select that!