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Windows Central Question I changed since in my lumia and when I started it again it's screen went black after windows logo.. I tried many time but screen remains black after windows logo
if you still see Nokia and the windows logo during startup the display still works.
Try a soft reset.
Hold the volume down and the power button until the phone vibrates.
If that does not work i would recommend to use the Lumia software recovery tool.
How to fix a Microsoft/Nokia Lumia that has frozen or won't - Microsoft Community