Lumia 535 Display dead after Update

[BaqerNaqvi]

hello! I got a problem here with my Lumia 535. Yesterday I received an update and I let it download on my device. Later on after downloading, I hit the install button and got busy into routine. After couple of hours when I reached my phone, unlocked it and it was dead, black blank-display, nothing else. Only volume keys are working and i can also take screen-shots which are being saved in phone memory (I can see them while attaching to laptop). Wifi is sign is also there. But I can see no controls, nothing. Seeking help, thank you! Moreover I can get calls only. No messages.

 

[grantpwarren]

Soft reset a couple of times, if not hard reset using the hardware buttons.

 

[BaqerNaqvi]

Soft reset is not working and I cannot reach the actions required for hard rest.

 

[vipme]

Try it using Windows Phone recovery tool, reinstall the latest available OS.

How can I recover/reset/restore my phone software? - Microsoft - USA