Default [Q] unexpected reboot in AR HD 7.0

Hello, when I finish installing rom AR HD 7.0 seems to me the choice of finish, I finish and phone is restart unexpectedly and not pluck more!, I try to turn it on and couldn't, but when pressed down vol + vol up + power on, lit, what happened?

so I'm now using AR HD 7.0, but I am afraid that I will pass again, by putting another rom

Sorry for my English