My Macbook wont turn on, why?

Hi, for some days ago, i installed a mobile boradband to my mac, when it was finished installed I was restarting my macbook, but then, when i try to turn it on, it comes sound and an apple logo, but after 10 seconds, the screen blinks in different blue colours. :/

I've already tried to turn it on with the charge in the macbook.

Hope someone can help me.

Thanks!