MacBook Air is just flashing on and off but not working after trying updates

This morning I got notification that I was supposed to update my MacBook Air with both update for iTunes and update for Firefox.
I hit yes to both.
Now I am just getting a constant flashing on and off and blank screen alternating with brief picture of the Apple with bar underneath it.
Have turned on and off several times and still won't work.
Ideas/

Welcome to the Apple Support Communities
I don't think that the iTunes and Firefox updates could do this, but it looks like the logic board is damaged. What happens when you press Shift key while your Mac is starting?

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MacBook Air is just flashing on and off but not working after trying updates

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