My Htc m7 won't turn on! need help please

[Shibriat Hossain]

my phone is in bootloop..i flashed a custom rom via twrp..but after i flashed it i lost my imei..so to fix it i decided to flash stock rom via fastboot.. i changed the MID, locked it, made it super cid..and flashed stock rom via fastboot..but now it doesnot turn on..i tried with different stock rom..but no progress..then i flashed twrp via fastboot..and flashed a custom rom..but it doesnot take it..i think the root is gone..and the phone stays in htc logo..please help

 

[B. Diddy]

Moved to the HTC One Rooting/ROMs forum for more specific traffic.