I want to restore OS

[TabletUser6680]

I need to restore my tablet to the factory default. Even though my OS won't load completely, is there any way I can get it to load? OS won't start. It hangs up when robot looks to the right of screen.

 

[Afri10]

which tablet?

 

[TabletUser6680]

Mid Tablet PC

Specs are:

CPU: ARM Processor
OS: Google Android
Screen Size: 7" digital touch panel
it has wifi, usb port, ethernet, built in speaker, support audio frequency, built in mic, and work time 2.5 hours.