If your power supply has problems, drop a line to the manufacturer for repairs or a replacement.
bring up the case.
The method for opening the case varies depending on its design.
Most new cases use either a panel or a door.
Older computers require the whole cover to be removed.
Remove any screws fastening the cover to the case and set the screws aside.
All power supplies contain capacitors that retain power after the power supply is turned off.
Align the PSU in the case so that the four mounting holes align properly.
Fasten the power supply.
Hold the PSU in position while you screw it into the case.
Set the voltage switch.
North America and Japan use 110/115v.
Europe and other countries use 220/230v.
Plug the power supply into the motherboard.
If the computer has the motherboard installed into it, connect the power leads to the motherboard.
Most modern motherboards use the large ATX power connector that is plugged into the socket on the motherboard.
Some motherboards require an additional amount of power through a four-pinATX12V connector.
Connect power to the devices.
Many items in a computer case require power from the power supply.
Typically, these devices use thefour-pin Molex style connector.
Locate the appropriately sized power leads and plug the leads into any devices that require power.
Replace the computer cover or return the panel to the case.
Fasten the cover or panel with the screws that were removed when you opened the case.
Plug in the power and turn on the computer.
Plug in the power supply AC cord and turn the switch on the power supply to the ON position.
The computer system should have available power and can be powered on.
