How to unbrick moto g , usb debugging disabled , stuck in bootloop

hi, im new to xda, hope you can help me.
i had cm 12.1 and TWRP on my moto g (2013). I made a nandroid backup from the custom recovery.
After a successful backup , my phone is stuck in bootloop. I am unable to go to recovery mode . Though I can still access bootloader... please help me to get out of these mess...
Thank you in advance :)