firmware Software Version: 3.17.631.2
I unlocked the cellphone, installed TWRP and SuperSu, rooted it. Everything was fine here.
I tried to install CleanROM 7.0R2 from TWRP. It said successful under TWRP screen. But after reboot, I could not power it up, their is no response to the power button.
I could not enter either recovery or fastboot. Press the power button and volume - will only lead me to the "htc quietly brilliant" screen, and after several seconds, it powered off.
No red light upon charging. And PC could not recognize the cell phone when connected. The battery should still have 90% power.
Anyone has any idea for it? I am hopeless
Thanks a lot for your help!