I have a Lenovo Miix 2 8" windows 8.1 tablet (intel atom Z3740, 2 gb ram, 64gb emmc) and for some strange reason wont reboot , tried to uninstall apps and some updates, even factory reset and the problem persists, it just turn off and is really hard to turn it on again , i was reading that it could be an update, others says that the windows 8.1 update 1 was the culprit (factory reset discards that alternative), so ... i am out of ideas, hope you can help me.

Pd: sorry for my bad english