Computer wont turn on or go into safe mode..?

My computer ran the system repair after a crash, then after fixing whatever it was doing, it went to load the login page but nothing happened. Its just a black screen with nothing but my mouse.. so, I tried to go into safe mode and it does the same thing. Black screen and my mouse. What is going on and what should... show more My computer ran the system repair after a crash, then after fixing whatever it was doing, it went to load the login page but nothing happened. Its just a black screen with nothing but my mouse.. so, I tried to go into safe mode and it does the same thing. Black screen and my mouse. What is going on and what should I do? (I am using an hp laptop with windows 7, and I've already unplugged everything from my computer and tried removing the battery.)
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