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It does not happen often. Most likely your motherboard or power supply is dead or both.
"What effect will a price ceiling imposed by the goveenment have on the supply of farms producing wheat?"
If the power adapter isn't plugged in before the computer is powered on, then the computer will not power on. The power supply provides power to the rest of the computer (which allows it to boot). If the power supply doesn't get power, then the rest of the computer doesn't get power. This doesn't apply to a laptop if it has a charge stored in the battery.
If it is a computer power supply it is the box that gives the computer its power from the outlet.
In order to supply power supply to your computer you would need an outlet plug near your computer. Then you can plug your computer into that and necessarily, use an extension.
railways and waterways were built to supply the people with safe and efficient transportation
No The body has an endless supply and is always producing it
supply will decrease
supply will increase.
The "power supply" supplies power to a computer. A computer's power supply is a "switchmode power supply" responsible for converting the AC voltage from the wall into several DC output voltages.
test it with a multimeter
The power supply makes the computer run, without any type of power supply it would be impossible to run a computer. The mains power supply for a laptop and the power supply unit of a desk top, both convert the high AC voltage from the mains power and convert it to low voltage DC, for the electronics of a computer to use.