Apple launched Macbook versions  from early 2006 to late 2011, and relaunched in 2015.

A MacBook is the only way to run OSX (legally). MacBooks have good battery life, and are light and slim. A lot of users addressed that their Macbook Pro wont turn on. Here is the potentials solutions you can try.
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1. Ensure that batteries are not complete dead.

2. Ensure the socket is properly wired.

3. Try different wall sockets.

4. Disconnect all accessories like printers, USB hubs, etc.

5. Hold down the power button for ten seconds. Then, press the power button again.

6. None of these options gets your Macbook open up, visit an Apple Store or Apple Authorized Service Provider (AASP).