My iphone is stuck on the apple logo and won't do any thing?

Well i have an iphone and its stuck on the apple logo and won't do any thing, i've tried connecting it to itunes but it won't show up on my computer? I've tried pushing the home and sleep button but it doesn't fix it? It will not turn off! How can i fix it?

If you hold the HOME and ON/OFF button at the same time it'll work, that'll do the trick

Try going through the process of jailbreaking it.

As long as you know your Version number, you shouldn't have a problem.
When you connect your phone to your computer and go through the steps to get it into DFU mode, it might fix your problem.

You can always restore the IPSW afterwards if you don't wait your phone jailbroken.

Well, you can try the holding home button and lock button at the same time, which you say you have tried, but make sure you are holding for a period of 10-15 seconds before releasing.

Since plugging it into your computer is not working, try plugging it into an outlet, for some reason it has unfroze my iPhone before.

After that all I can say is either let the battery die, or take the back plate off of your phone and unplug the battery directly. If you do open your iPhone it will void all warranties so, if your under applecare or something like it just take it in to an apple store or certified repair shop and have them play with it. If you are still under warranty and they can't fix it they will have to give you a new iPhone.