Lenovo k3 note Black Screen coming after flashing CWM recovery.

After i flashed lenovo k3 note with CWM recovery and installed SuperSu-v2.46 using PDAnet [CWM] , i am getting black screen after lenovo logo. After that i tried clearing data,cache and dalvik cache but nothing helped. I can get into CWM recovery. So I tried to reflash CWM recovery but again the same problem. I had the same problem with my friend's phone, what his phone was running was twrp but we tried to install cwm and same problem occured in his phone too. I think the problem is with recovery.Please help me how to flash twrp recovery or flash back to stock recovery.

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