Bricked my M8, only thing that happens is the screen switches on and off

I tried flashing a custom rom (forgot which one) now my phone does not work AT ALL, CAN'T BOOT INTO RECOVERY, FASTMODE, BOOTLOADER, ETC


now to repeat it:

CAN'T BOOT INTO RECOVERY, FASTMODE, BOOTLOADER, ETC
CAN'T BOOT INTO RECOVERY, FASTMODE, BOOTLOADER, ETC
CAN'T BOOT INTO RECOVERY, FASTMODE, BOOTLOADER, ETC
CAN'T BOOT INTO RECOVERY, FASTMODE, BOOTLOADER, ETC

What do you guys think I should do?