Okay, I'll tell you the whole story...
Last night the last thing I did on my computer was my homework when I was done I just shut the screen and went to bed. This morning I unplugged my computer like I do every day and went to class. When I got to class I opened my computer and moved the mouse around and all the lights on the keyboard area turned on like they always do but the screen stayed black and the computer was not making the sound it makes when it is thinking. I pressed the power button and held it until the computer turned off then I pressed it again so it turned on and again the light turned on on the keyboard but this time the caps lock and number lock lights started to flash but the screen was still black. I pressed the power button again to turn it off then I turned it on I though it was going to be just like the last time cause the screen was still black so I pressed the number lock key and then the screen turned on like it should bet now the lights won't stop blinking I have restarted it the right way by going to start restart. So now I'm wonder what I have to do to get them to stop blinking.

Ha not sure.. but it sounds like it looks cool
I bet its either one of 3 things though.
(1)keyboard problems which the computer won't boot unless it recognizes a keyboard(unless you set it in the BIOS)
(2) power supply (battery or charger or even the connector that is between the battery and the actual computer)
Or (3) you screen burned out because you left your computer on for too long IT NEEDS TO SLEEP JUST LIKE YOU DO(and I don't mean just put it in "sleep" or "hibernate" modes I mean SHUT THE DAMN THING DOWN)
Also try taking out your RAM then boot it too.? That might work(if you leave a computer on for to long it will kill your RAM)