Acer computer not starting up?

I bought an Acer Windows 8 computer earlier this year, and it has never had any trouble before.
This morning I tried to turn it on, usually it would come up with the "Acer" logo and then go straight to my lock screen, but instead it showed the "Acer" logo and went to a black screen.
The cursor is visible on the screen, and I'm able to move it around but there's no way I can actually get into my computer.
I left it for about 30 minutes because I thought it may be starting up very slowly, but I came back to it and it was still on the exact same screen.
I've tried turning it off, and then turning on several times which did nothing.
Just before, I tried to find some advice on the internet, and one website advised to turn on the computer, and while it is starting up, press down on the on/off button again. The website said when turned on again, it should come up with the "start windows normally or repair" screen, but instead it came up with the Acer screen as usual, and then the black screen, but with no cursor whatsoever.
What is wrong with it?
How can I fix it?
I don't think I did anything unusual when I was on it yesterday, I was just on the internet on Facebook and I was playing Minecraft singleplayer, and that was about it.

Name Suggestions for Minecraft Youtube Channel?

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I plan on recording video games (mostly minecraft, but would like to start recording more graphic intense games soon), live streaming my gameplay on Twitch.tv, editing my videos, and just casual gaming. Please try not to argue in the comments.

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So i have minecraft 1.7.9 and i Really WANT TO PLAY WITH MY SISTER >:( but LAN is not working she has windows xp and i have windows 8 does this have anything to do with it? Anyway we have tried almost EVERYTHING but nothing works we get:
1: Connection refused.
2: Connection timed out
3. Session failed (try restarting your game)
And we did restart the game but it didn't work, I have turned off windows firewall and i have allowed java and the minecraft launcher through the firewall but it just wouldn't work. Am i typing the ip the wrong way we type it like that: 32.43.76.872:5367

Please Help I'm Really DESPERATE TO PLAY WITH SOMEONE IN LAN please…

*please answer something i haven't tried*

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So as long as I do not copy their codings, graphics, music, etc… I'm fine to use the concept, right? I will be making my own images, adding extra features, my own character, a different title and fonts.

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Hi i'm having problems portforwarding router e5172 can anyone help me.
I can't find any tutorials for this router on yotube.

Added (1). Hi i'm having problems portforwarding router Huawei e5172 can anyone help me.
I can't find any tutorials for this router on yotube.

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It has to be on PC

I know this is confusing but hopefully someone will know a game

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Is this any good for minecraft/gmod?

As this would be my first laptop (for my b-day i'm 15 ) i was wondering if this is any good for minecraft/gmod check it out:

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=8908439&CatId=3992