Welcome to TinyDeal.
Item EPA-375225 does not need to be activated, please check the picture below for details.
( http://www.tinydeal.com/dual-os-android-44-windows-81-intel-atom-z3735f-mini-pc-p-145085.html )
If you still have problem, you can restore the factory settings.Specific operation refers to following links:
Any questions please contact us by Customer Service Express: http://help.tinydeal.com/contact-us