Here is a quick fix for the common power button problem people have after taking their PS4 apart. A bunch of googling lead me to believe that a part had snapped off when I removed the cover but thats not the case. You just have to make a metal part on the cover touch a metal piece on the ps4 which activates the power. Alot of fixes require you to buy a new cover but you more then likely just arent putting it back together correctly so double check before you waste some money.