I updated my iphone 4 and it won't turn on?

I updated my iphone 4 this morning to IOS 7.1.2(not sure if it's 7.1.2 but its 7 for sure) and left it alone to update. Then when i picked it up it was turned off and when i turned it back on it showed me that picture. I tried to connect it to itunes on my laptop and i think i should restore the factory settings or something else… But when i tried to do both of them there was a problem and i couldnt do it. Any help please?I updated my iphone 4 and it won t turn on

Sounds like you OS got corrupt. You're going to have to do a factoy reset. Try putting it in DFU mode: http://www.iphonehacks.com/put-iphone-in-dfu-mode
. This will force the phone to start looking for the OS install from the computer. Hook it up to iTunes once in DFU mode and it should prompt you to restore it.

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