Display not working [Closed]

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Hello,
I wanted to install the Jarvis theme for my lenovo z51-70. But the power went off and it couldn't install properly. Now, after logging in, it shows the Jarvis cursor and none. Two coloured lights are turning on one by one. I can't open task manager, device manager or anything. I have tried rebooting for more than 10 times but in vain. Also, battery is non removable. What should I do?
Help me restore my PC or just tell me how should I uninstall the Jarvis theme without display.