urgent please help,my phone is not turning on!!!

[anox19]

I unlocked the bootloader by ez unlock tool and then switched my xperia z ultra off.Then while trying to switch it on it gives no response,neither the led lights turn on,tried pushing the small red button,the power+v up and it vibrates 3 times and when I try again it does not turn on.This is a newly bought device and I am totally fraeaked out.plz help,pc companion is also not recognising

 

[VidJunky]

Your pc won't recognize a device that is not powered on. When holding up on the vol button and attempting to power up the device it vibrates? Try holding down on the vol and powering up. Up should be a simulated battery pull, down should offer you the boot options including factory reset. You can select reboot phone from there and not do the factory reset or any of the memory erasing things. If it won't respond, press and hold the power button alone until it vibrates. There is also the power button and home button combo you could try.

 

[anox19]

Thanks for your reply but it does not have any home button and holding down volume down and power does not help.