Provisionary OS image has failed to verify

My Nextbook hadn't been powered on in 2 years because it needed a new battery. I replaced the battery and it will power on but will not boot. All it does is give me a black screen that says “The provisionary OS image failed to verify, the device will shutdown.” When I attempted a hard reset, it showed me the same error screen. Is there anybody who knows how I might fix this?

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