Lenovo yoga tab3 keeps powering on and off

Hello, trying to help my brother get this thing to work he says he had it working then he did the windows update to 10 and from then on it's a paper weight and i plugged it in and best i can get is it vibrates then it's bios splash screen shows then it's of again then lil bit later it does it again i will repeat this a few times then eventualy give up

is there a way through this problem or is just junk