anyone have solution? N910W8 note 4, boot loop

I have note 4 N910W8, phone is in BOOT LOOP,

Phone is going in recovery mode
Phone is going in download mode

I have tried flashing stock firmware in odin, but phone is still in BOOT LOOP,
I Have tried flashing firmware with z3x box but phone is still in boot loop

is it a hardware problem??
if it is hardware problem, how to fix it?

thank you