How to Fix a Computer That Won't Turn On

It's a really awful way to start a day: you press the power button on your computer and nothing happens. Few computer problems are more frustrating than when your computer won't boot.

There are many reasons why a computer won't turn on and often very few clues about what might be the problem. The only symptom is usually the simple fact that "nothing works," which isn't much to go on.

Add to this the fact that whatever is causing your computer not to start could be an expensive part of your desktop or laptop to replace - like the motherboard or CPU.

Do not fear because all might not be lost! Here's what you need to do:

1. Read the first section below (it'll make you feel better).
2. Pick the best troubleshooting guide from below based on how your computer is acting or choose the last one if your PC stops at any point because of an error message.

Note: The "computer won't start" troubleshooting guides below apply to all PC devices. In other words, they'll help if your desktop or laptop won't turn on, or even if your tablet won't turn on. We'll call out any important differences along the way.

Also, all are applicable no matter what Windows operating system you have installed on your hard drive, including Windows 10, Windows 8, Windows 7, Windows Vista, and Windows XP. The first five steps even apply to other PC operating systems like Linux.