Why does my phone show a blank screen after updating?

[Windows Central Question]

phone shows blank screen after update

i have lumia 640xl recently bought and i updated it to windows 10 ... after installing the phone rebooted and now it is showing just a blank screen just notification bar and navigation bar is visible i did tried to soft restart it ( volume down and power ) but that doesn't make any difference
any help

 

[Maurizio Troso]

Re: phone shows blank screen after update

i have lumia 640xl recently bought and i updated it to windows 10 ... after installing the phone rebooted and now it is showing just a blank screen just notification bar and navigation bar is visible i did tried to soft restart it ( volume down and power ) but that doesn't make any difference
any help

Try the hard reset key sequence, so phone reinstalls again last downloaded build