Hello. My name is***** can assist you with your question. We can factory reset your tablet will depend on the exact model number. Each tablet has a different way to reset it. But there are a few ways which are very common. The button combo varies from tablet to tablet but from a powered down state you could try some combination of the volume button (first) and the power button and hold them both down to see what pops up. It may be volume down or volume up, or none of the above.
I would give those commendations try and let me know how you make out.
Neither of these is working. Is there anything else i can try?
Do you have the exact model number of the tablet?