my laptop don't come on with power button, but come on if I remove and re-install the battery

Solution
Doesn't have a power button really? I suggest consulting the manual. If you told us the brand/model of said laptop maybe we could had look it up for you, but nope, you provided near zero information.

BSM911

Honorable
Nov 12, 2013
5
0
10,520
This actually made me laugh so hard. Check the manual or google the name of the laptop and look on youtube for a review or something similar where they turn on the laptop. As a last resort go back to where you bought it from and ask or telephone customer support.