Android Questions? Ask Android Device Experts for Answers ASAP
Try this please.
1. When device is off, press (also hold) volume down key and then press (also hold) power key.
After the device vibrates, release power key (keep holding volume down key) to enter recovery mode.
2. Select "wipe data/factory reset" by volume down key (or volume up key), and then press power key.
3. Select "Yes -- delete all user data" by volume down key (or volume up key), and then press power key to start reset.
4. After reset is completed, select "reboot system now" and press power key to reboot your device.
Were you able to get the Asus Zen working properly?
Let me know if you need more help please.
I am sorry about this,unfortunately this sounds like it might be a hardware issue.