Hi there and welcome
Make sure the charger has been connected for at least 20 minutes, then hold the volume UP and power and tell me please if it now starts.
Let me know the results.
ok, repeat the procedure I gave you but this time we will try to get into download mode via the Volume Down key and power
Let me know the results please.
It is the internal mainboard that has faulted.
A corrupted firmware can cause this. But we have ruled this out by trying to reinstall it. The fact that we cannot get to the recovery window, confirms it is the mainboard that shorts out, and causes the device to stall.
I am really sorry about this and you are going to have to return the phone to have it replaced. It will be covered by the warranty if this has not expired, and the replacement will be done at no cost to you.
I am really sorry about this, and if you have problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service, that would be greatly appreciated.