Lenovo K920 lolipop stuck on loading screen - Android Q&A, Help & Troubleshooting

Hello,
I have my self Chinese k920 phone, was trying to put googleplay in it. Unlcoked a boot loader and left it over night connected to wifi, next morning i saw it in black screen. Switched it off and on and you can see a white screen lenovo writting, some chinese symbols and loading bar which slowly loads something, after 10min white screen comes one and then black again, thank you for all the help.

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