How to factory reset jlabs pro 7 table. Ive tried everything. cant get to the factory reset screen?

Ive tried holding down the power button and volume buttons I just dont know how to get to the screen to completely wipe it clean. I cant even unlock i

I've tried holding down the power button and volume buttons I just don't know how to get to the screen to completely wipe it clean. I can't even unlock it with the pattern and get into it because for whatever reason it's showing that the screen is being touched in various places when no one touches it. It's a pain :(

or:I've tried holding down the power button and volume buttons I just don't know how to get to the screen to completely wipe it clean. I can't even unlock it with the pattern and get into it because for whatever reason it's showing that the screen is being touched in various places when no one touches it. It's a pain :(

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