Please ensure to use genuine ASUS AC adapter/USB cable. Please check if cable is firmly connected and charge for several hours. Please also try connecting to PC to see if its recognized. Have you tried booting into Fastboot mode? 1. When device is off, press (also hold) volume up key and then press (also hold) power key. After the device vibrates, release power key (keep holding volume up key) to enter Fastboot mode, please also see
ASUSTeK Computer Inc. -Support-
Sincerely,
ASUS_USA
cl-frank@asus.com