Computer Won't Power On
Please ensure the mains power is working
Check the power is actually working, try connecting a lamp or another
appliance that requires power to the same mains power outlet or multi-power board as the computer and confirm it works normally.
Did checking mains power resolve your issue?
Loose plugs are the common causes for such issues.
Computer Power - No Lights or Noise
If other devices work fine on the same mains power socket or multi-power board and
the computer will not come back to life even after you have triple
checked the power is connected correctly it will require service.
Notebook and All-in-One Computers
These
have external power supply units (often called power bricks) and either
the power supply unit is faulty or the notebook computer itself is
faulty.
Desktop Computers
Traditional desktop computers have internal power supply units. Do not attempt to service the power unit without training.
Other possible causes
Moisture damage
Dropped / impact damage
Power surge damage
Clock battery (old devices)
Mobile device battery (failed battery)
Resolution
If testing via replacement power supply resolves issue, great.
Anything more than a replacement power supply unit requires further investigation
If any of the "Other Possible Causes" was encountered leading up to this event, please be factual about what has occurred with your technical support person and be aware that water, impact and power surges can damage internal computer components and there is a risk of data loss.
All computer power supplies should only be tested by your local computer
workshop to verify if the power supply is at fault or if the actual
computer itself is faulty
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