Macbook turned into desktop - How to power up

I use my MacBook Pro Mid 2014 as a Desktop. I hooked it up to a monitor, a mouse, a keyboard, some speakers. But everytime I want to turn it on I have to open the lid, press power button, wait for my password input and then shut the lid. How can I power it up without having to press the power button. I use a Razer Blackwidow as a keyboard, is there any button I can use to power the MacBook on without having to open the lid and wait for it to turn on and input the password, then close the lid and use the desktop? Thank you.