Lenovo A6000 Stuck on Logo Screen

Hi,
I was flashing the CWM recovery from a link given in this forum on my lenovo a6000 with the command

fastboot boot recovery.img

it gave me an error

downloading 'recovery.img'...
OKAY [ 0.301s]
booting...
FAILED (remote: dtb not found)
finished. total time: 0.316s

Then i searched on internet and found another command to do the same and that was

fastboot flash recovery recovery.img

It did write the flash image to the phone. But since then the phone is not booting. It's stuck on the screen "Lenovo Powered by android" cannot attach image because this is my first post. I left the phone for an hour but it's stuck on the boot logo screen.

Then i downloaded twrp recovery and issues this command

fastboot boot recovery.img

It rebooted and went into the twrp recovery menu. I had already downloaded stock rom earlier as a flashable zip file. So i copied the flashable zip to the external sd card using adb push, i then navigated to this zip file form twrp recovery and started the flash process. Evrything completed successfully. I then cleared the cache/dalvik cache and rebooted the phone but it's still stuck on the boot logo screen.

Please help if anyone has encountered similar issue.

I tried various unbrick solutions on google none of them are definitive.