HTC Desire 820 Dual Sim indian version Reboots frequently after installing any rom !

Hi friends

My phone details

Bootloader information

*** Software status: Modified ***
*** UNLOCKED ***
A51_DTUL PVT SHIP S-ON
HBOOT-3.19.0.0000
RADIO-01.01.010_U10305041_08.01.50512
OS-2.10.720.1
Sep 18 2015,02:54:06.0

bootloader is unlocked
before i have installed supersu
before having this issue i have managed to install Chinese stock rom , but after wiping everything using twrp recovery i cant install anything ,
i have tried with discovery rom and stock indian rom from free-firmware.com
when i try to install discovery rom now using twrp recovery i can finish installation ! after installation device reboots frequently

how to solve this issue , i want stock rom back now !
please help