They could over heat.
If it is a computer power supply it is the box that gives the computer its power from the outlet.
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.
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.
When your computer will not power on. When the cooling fan of the power supply has failed. When the amount of hardware in use in your case exceeds the power capability of your power supply.
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.
The most common problem lies with the user rather than the power supply itself.The computer user hardly ever thinks about his power supply so long as it works.Therefore they'll overburden the power supply by adding hard drives until it's overwhelmed.When you add power hungry componenents to your computer you have to consider whether or not you have adequate power.WHen you have a problem with your power supply in general your computer stops working and you have to spend 30$ for another.
computer
To power all the components of a computer.
SMPS(switch mode power supply)
A D.C volt tester. Just something that can read D.C and 12 volts.
The PC power supply box's function is to supply the computer with power. Without the PC power supply box, the computer would not be able to turn on and off.
Cisco power supplies are computer parts. The power supply is the part of a computer that receives electric power from a plug and sends that power to the other parts of the computer. Power supplies also include fans to keep the computer at a reasonable temperature.