Please tell us some basic information before asking for help:
Model Name: Asus 6z
Rooted or not: No
Frequency of Occurrence:
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
Was watching youtube when phone goes blank. Any combination of power/volume keys did not turn on the phone. Charging the phone and no red indicator light. Connected to a PC and device was identified as "QUSB_BULK_CID" followed by a serial number. There is an XDA thread on flashing firmware in EDL mode and I tried that. But it did not help me. Looks like an hardware issue.
Last year, I had a problem with camera and solution was to replace motherboard under warranty. Now this.. hesitant to visit service center again, no point in wasting time in such **** hardware..