Symptoms
Computer/laptop will not turn on.
Cause
There are several possible causes.
Resolution
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1) Check to make sure that you have power in the building or the outlet the computer, charger, or dock is connected to.
2) If the computer power cable, charger, or dock is connected to a power strip or surge protector, make sure that the power strip or surge protector is working.
3) Try connecting the computer power cable, charger, or dock to another outlet that you know is working.
4) Check and make sure that the power cable, charger, or dock is not problematic. Try powering your computer another way (different power cable, dock, etc).
5) Check to see if it is an issue with the display. If it is a laptop, see if you can plug it into a monitor. If you only have one monitor for your PC, try testing on another.
6) If it is a Dell computer, please try https://www.dell.com/support/article/us/en/04/sln85632/dell-pc-does-not-turn-on-or-boot-into-windows?lang=en.
OUTCOME
Computer should now power on. If none of these solutions work, then it is possible that your power supply is not operational.