Unable to boot MacBook PRO 15" LATE 2015 with Intel Iris Pro

[Lorenzo92_]

Hey Guys,
I have a serious problem with my MacBook Pro 15" Intel Iris Pro late 2013.

After i have installed the DP1 , every time that i turn off my macbook, and then try to turn on my macbook, the screen stay black and nothing appears (a part from the standard system boot sound): i have to reset the NVRAM to resolve the problem.

Anyone have the same problem?

 

[Lorenzo92_]

Update: someone have the same problem.
https://forums.macrumors.com/threads/macbook-wont-boot-on-el-capitan.1891245/

I have reported this serious issue to Apple.