Answer: Always check to make sure you are plugged into a safe and proper outlet first so that the machine (posts.) I.E.turns on (the OS )Operating System: Windows, Mack, Linux, etc...
Explanation:
1. If you are on a laptop -Check to make sure your computer battery is charged up if you do not have the power cable plugged in. A dead battery will not let you turn on the computer period.
1a. Your battery may need to be replaced so always keep the machine plugged into the wall even if you remove the battery of a laptop.