I have done a factory reset,tried a new sim card and made no difference.and
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I have done a factory reset,tried a new sim card and made no difference.and
What you still could do is use the Lumia software recovery tool.
https://forums.windowscentral.com/e?...token=o9crgTLy
If this does not work then you may have a hardware problem and should sent it for a repair.
First, make sure they aren't trolling you. Next, follow the steps of Harrie-S.