I am not sure I understand what you are asking so let me ask...
You say the lights aren't turning on, but you didn't say if the laptop itself is turning on or not. Is it? If it is, the fact that the lights aren't might annoy, but won't effect it working. If you wanted that fixed you would have to take it to a tech or the manufacturer (if under warranty).
However, if it is not showing lights and not starting at all, that is different. Then again you would still have to have it looked at.
But, as stated before, if it is just the lights, but everythign works, there really isn't a reason to worry unless it just bothers you.