Windows 7 Gateway Laptop Failed To Start (loop)

Hello.

So, recently, I've encountered a problem with my laptop. I was just playing minecraft, with a couple other windows open, to listen to music. Then, everything froze. I waited about 2 hours until my frustration got the best of me, so I force turned off my laptop. I then get off for 4 hours, and come back to log on. I get the usual Gateway logo, and whatnot, until it pops up with " windows failed to start. a recent hardware or software change might be the cause". Very worried about the computer, I choose Launch Startup Repair. (only two choices, that, and startup normally, which just loops me back to the same place.) I wait for the "loading files" to finish, then it goes to a black screen. I wait about 15 minutes, then it goes to the log in background, and I have my mouse cursor on it also. But that's all that's on there. Just the cursor, and login background. I wait for 3 hours, and nothing.


I'm very worried, and scared for my computer.
Please help if you can.