There are several possible reasons why a desktop, laptop, or tablet computer might not power on, so it’s very important that you step through a complete troubleshooting procedure like the one we’ve outlined below.
Believe it or not, the number one reason why a computer won't turn on is that it wasn't turned on!
Before starting a sometimes time-consuming troubleshooting process, make sure you've turned on every power switch and power button involved in your computer system:
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