My iPhone 3GS won't turn on after I jaibroke it? What do I do?

I tried to jailbreak my iPhone and it worked Cydia was on there and I opened Cydia and searched something and then it turned off and it would not turn back on and then it showed me a white screen so I tried to Restore it in RedSnow and it turned on with the apple logo but turned right back off and it's been like this for 3 months and while not turn on what so ever

Hold down the lock (top button) and home button at the same time and keep holding until it turns on. If that doesn't work I'd go to someone professional. Hope this helps!

You usually need to restore using iTunes. Try putting it into DFU mode or recover mode. Look up how to do that because the steps are a little lengthy.

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