I don't know if I am writing in the right place but its worth a try.
I bought a Nokia Lumia 1520 through Att online. I saw it needed to do a lot of updates because it was on Windows 8 and not on 8.1 like my previous phone Lumia 920. I did all my updates and started to personalize and transfer my data until I downloaded one of my last games and the screen started to flicker. After that it all went black and it doesn't want to turn on, though the touch is enabled and the 3 main buttons are lighted up.
I've rebooted many times (soft and hard). Though it still doesn't work for me to even see the exclamation point on the hard reboot. It charged for about 30 min and nothing happened.
I don't know what else to do but take it to Microsoft and Att. I am really disappointed with this, I was really looking forward to this phone. And my phone is not even a day old.
My thoughts are on the software, if you have any suggestion please help.
Thank you in advanced.