I have still this brand new nvidia shield tablet which I got after recall. The thing is, after I've got it and whole reinstall, I haven't used it for several months. When I was about to use it a few months later it wasn't booting at all even display is not turning on. All I can do is to charge it and when I connect to PC it's recognised as ADB but there's nothing more I can do. I already tried key combinations and also to connect over ADB, even though there's no driver which fits. I heard there might be issue with hardware, does anyone know what it might be? Guarantee is over and I've also sent it to repair service, they couldn't figure out the issue although current measurement was all right. What else can I check in order to find the issue?