When your Mac doesn’t turn on at all, you most likely have a hardware issue. For the computer to boot up properly, essential parts work together to deliver a smooth computing experience. Once one part starts acting up or dies completely, the entire process may be disrupted. The computer won’t be able to turn on at all, or may take a long time to power up.
Here are some specific issues behind your Mac not turning on:
Hard drive failure
It comes as a surprise to many that a hard drive failure can affect their computer so hard. Hard drives have a limited lifespan (much like Li-ion batteries) and are prone to damage if they’re not taken care of well. Hard drives have a lot of sectors that work in conjunction with each other to perform functions like – turning on your computer, booting up the operating system and storing your files. When more and more sectors of the hard drive get faulty due to prolonged use and wear and tear, the drive will start to show signs of failure. That is when you should look into replacing the drive. If your computer won’t turn on/your operating system won’t load up, it is worth your time to get your hard drive checked for a sectoral analysis and checkup.
CPU, RAM or logic board failure
The logic board is a very intricate and complicated component of the entire computer. The logic board, if failed, can spread the signs of failure to the entire computer without you even knowing about it. It is the communication channels on which all of the other intelligent components depend. Overheating of the logic board or liquid damage into the components of the board are some of the most common causes of a failure of a computer’s boot process.
