Usually, a black-screen, error report, or sudden closure is caused by mods or is a bug in the game itself, try deleting your bin folder in your .minecraft folder and starting minecraft.
This will re-download a fresh install, and fix any problems with mods.
If the problem persists, ask on the minecraft forum of email the support line.
Try running it as an administrator and make sure you have the latest minecraft launcher and the latest version of java.
Update your minecraft.
You can try download minecraft from usenet, but if you try, do not enter any username or password in your downloaded minecraft.exe. To play multiplayer, you have to buy the game.
Try playing Blockland. It's a game similar to Minecraft. There is even a free trial version.
You just need to restart minecraft its a glitch that sometimes happens.
Enter no password, and the options will appear of 'play offline' or 'try again'. Select play offline.
You should try opening it and then updating it, that makes it not only update but also repairs Minecraft.
Sweden
Try and send the file to another computer and play it on there!
At the login screen, press options and force update. Then try again. If that doesnt work, try deleting %appdata%\.minecraft and change your password.
Oh, dude, can you play Minecraft on a smart TV? Well, technically, you can't just download Minecraft on your smart TV like you do on your phone or computer. But hey, if you're feeling adventurous, you can try casting your screen from a device that has Minecraft installed. Good luck, my fellow block builder!
Mine says something about the pugin when i try to go on to try minecraft for free you probaly just have to update your java.