I bought a tablet and it has demo stuck on it and I can get it off the screen

Go to the system settings and look through them to see if there is an option for demo mode. Also, go to Settings>Apps>All, and see if there is an app called "Demo." If there is, tap it and tap Disable, if possible.

try this,,,settings>storage>apps> demo video> disable

or this,'
Tap on Apps in home screen - Settings - Storage - Internal Storage - Apps - Scroll down and Identify "Demo Video Application" under the apps list .

Tap on Clear Cache and tab on "Disable", Ignore the warning message.
Note: Cust may see the "Demo mode" icon in the homescreen, however it wont bringup Demo Video

Return it to where you bought it, someone has customised the start up screen.

If that is an android operating system, all you have to do is go to your menu > settings > phone > about > factory data reset If you are stuck on the pattern password and unable to get to the home screen, hold the power + volume up + main screen button to proceed with the safe mode, from there you can freely roam around your phone and do the task above.

Doing this will remove all the user data on the tablet.

Your tablet is stuck in demo mode, to reset the demo mode shut off the tablet, keep pressed at the same time power+volume up buttons, the tablet will boot in recovery move, the last selection of the menu is the demo mode feature 0n/off

Try the procedure at the bottom of this web page SOLVED How to Remove Demo from the Zeepad Screen Android Tablet Forum

If there is an options menu go and find the demo there should be one. I think that would be the place. Hope this helped you.

email them a [email protected] i did an they sent a package to download an my demo went away

Take it off of demo mode, you might have accidentally put it in demo mode.

You might find the answer here:
ARCHOS 101 User Guide