Today I received my HTC One. I gues it is a demo phone. When I tried to get into bootloader it was all chinese. As I do not understood that language I tried to guess wich one was 'exit' pushed the last one in menu and it powered down. But now, when I turn it on, it vibrates, display blinks and nothing happens. When I hold volume up + power button it let's me choose between 4 boot options. Fastboot, normal boot, recovery mode, vart boot. Tried every option, but it still vibrates, blinks and nothing happens. Any ideas?