Need Help The Rift dosent start on windows

Hello everybody i recieved today my Oculus iam so happy butt now my Problem


I insatll the Runtime
then i connect the Rift
and start the pc new

after this i strat the config tool
an create a new profil
after this i try to start the demo and the rift stays black
the orange led was on and also the blue leds by the usb plug an the rift

after a restart of my pc

the orange led flash on and befor i can log in to windows its go out ander its not possible to switched it on again


i reinsatll everything but nothing happends also so blue leds on the position tracker dont flash up






Can anybody help me



Thanks