Oneplus Two display does not work after turning on (but sign appears)

My Oneplus two device is in a really strange situation. When I turn on and off my device I`m able to see the Oneplus logo but thats all. Afterwards I have a black screen on my device. Everything is working like the fingerprint or the volume up and down. I`ve already rebooted my device several times but nothing helps. This condition was not from the beginning. The first 2 two weeks everything was fine and suddenly nothing responded. After turning off and on the device had the situation as described. What can I do??
Thanks