Welcome to Android Central! More details would be helpful. What happens when you try to reset? Does it go through the initial process, then abort? Do you get an error message?
Have you only tried from the Settings menu? Have you tried the hardware button reset as described here?
LG V410 G Pad 7.0 LTE - How to Hard Reset my phone - HardReset.info
Thread moved to the G Pad 7.0 forum.