Help with OnePlus Two (root fail)

Hi, my friends...

So I was trying to root my Oneplus Two and so I follow the tuto :
forums.oneplus.net/threads/oneplus-2-how-to-unlock-bootloader-install-custom-recovery-root-efs-backup-more.345478/
I can't put anylink yet because I've got new acc so I just put link like this... Sorry

I was at this part

Quote:

Code: fastboot oem unlock

Everything was fine and it ask me to check if it was in unlock mode so I turn off the phone to reboot in bootload/fastboot mode like it said but ...
It won't turn on, even when I'm trying to connecting to the PC or try to charge it, just a black screen...

I don't think I fail anywhere, just follow throughly instructions

So anyone got advice?