How to start the computer without connecting it to the motherboard

How to supply power directly if the computer's power supply does not pass through the motherboard

The ATX power supply can supply power to other loads without being connected to the motherboard.

The way to make the computer power supply output 12 volts directly without connecting it to the motherboard is to unplug the connection between the computer power supply and other hardware, and then directly short-circuit the green and black wires with wires to start the power supply. Of course, at this time, the computer voltage is not only 12V, but all other voltages have the same output.

The computer power supply adopts AT working mode. This kind of power supply works by plugging in the mains power and is not controlled by the computer motherboard, so it must have a power switch to control its work. Its power supply voltage output has only four voltages, namely 12V, -12V, 5V, and -5V. , the output plug uses a 12-pin plug (see the right side of the picture).

When connecting the power switch cable to the power switch cable, first find the two-pin plug marked "power sw" on the chassis panel cable, which is white and brown, and then plug it into the motherboard labeled "power sw". Just put the pins with the words "pwr sw" or "rwr" on them.

How to power up a PC without connecting it to the motherboard

1. This only requires short-circuiting the green and black wires of the power supply.

2. When connecting the power switch cable to the power switch cable, first find the two-pin plug marked "power sw" on the chassis panel cable, which is white and brown, and then plug it into the motherboard. Just use the pins marked "pwr sw" or "rwr".

3. The computer power supply adopts AT working mode. This kind of power supply works by plugging in the mains power and is not controlled by the computer motherboard, so it must have a power switch to control its work. Its power supply voltage output has only four voltages, namely 12V, -12V, 5V, and -5V. , the output plug uses a 12-pin plug (see the right side of the picture).

4. There are a total of twenty ports for power plugging into the motherboard. There are two rows of ten in each row. The fourth port from the left (is black) and the fourth port from the right (is Red) shorted together with paper clips. That's it. Note: The two connected ports are on the same row.

How to start when the power supply is not plugged into the motherboard

1. In actual testing, it is recommended to connect corresponding false negative interceptors to each set of voltages output by the main power supply, so that both Accurately judging the working status of the main power supply can also prevent some power supplies from not working due to no load at 12V (or 5V).

2. The computer power supply adopts AT working mode. This kind of power supply works The method is to plug in the mains and it can work. It is not controlled by the computer motherboard, so a power switch must be used to control its work. Its power supply voltage output only has four voltages, namely 12V, -12V, 5V, and -5V. The output plug adopts 12-pin plug (see the right side of the picture).

3. Method: Short-circuit the green wire in your photo and the black wire above, that is, the black wire in the middle of the blue wire. Remember to short-circuit Remove the wire. This will start it up.

4. Method: The computer power supply itself is a power supply device, but it can also be run without load. Insert the power triangle plug into Plug in the upper row and power on, then find the green wire (16th pin) in the 24Pin large power cord and short-circuit it with any black wire (GND) next to it.

The power supply of the computer. If it is not connected to the computer In the case of the motherboard, how to make its fan rotate, prompts short circuit...

1. Hello: If the computer power supply is not connected to the motherboard, and is directly plugged into the mains power supply, the power supply fan will not rotate. This The green wire of the power supply and any black wire must be short-circuited to allow the fan to rotate.

2. Method: The green wire in your photo and the black wire above, that is, the black wire in the middle of the blue wire Just short-circuit it once. Remember to remove the wire after short-circuiting. Doing this will start it up.

3. If it is not plugged into the motherboard, there will be no power to run. If it is plugged into the motherboard, it will not run. It won't run even when it's turned on. The black and green wires here are the power supply signal wires. If you don't plug in the main switch, short-circuit these two wires and the 4p socket will have power.

4. Online shopping 4PIN to CPU fan adapter cable. Unplug the CPU fan power cable as shown in the figure, and use the adapter cable to connect the large 4P power cable and CPU fan power cable together. Turn on the computer and check whether the fan is running normally. After the test is completed, return the chassis side panel bit.

Can't it start without the power supply connected to the motherboard?

The computer power supply is only plugged in, and it will work without the motherboard connected. Use a wire to short-circuit the green wire and any black wire, and the power supply will start. If it cannot start, it means that the power supply has a no-load protection circuit. Hang the optical drive or hard disk on the power supply to start.

In actual testing, it is recommended that the voltages of each group output by the main power supply be equalized. Connect the corresponding false negative cut-off, so that the working status of the main power supply can be accurately judged, and it can also avoid the situation that some power supplies do not work due to no load of 12V (or 5V).

Computer power supply It can run without load without being plugged into the motherboard. The specific operation method is to use a short wire to directly short-circuit the green and black wires of the power supply to start the power supply and make it run without load.

The power supply is plugged in but not connected to the motherboard, which means the motherboard is not powered, so the motherboard will not work.

The graphics card will not spin if it is only connected to the power supply and not to the motherboard, because when the graphics card is connected to the power supply, the graphics card is only powered on and not running.

How to start a PC power supply without connecting it to the motherboard

The computer power supply can run without load without being plugged into the motherboard. The specific operation method is to use a short wire to short-circuit it directly. The green and black wires of the power supply can start the power supply and make it run without load.

Method: Just short-circuit the green wire in your photo and the black wire above, that is, the black wire in the middle of the blue wire. Remember to remove the wire after short-circuiting. This will start it up.

First of all, you should determine the type of computer power supply working mode: the computer power supply adopts AT working mode.

You use a wire to connect the only green wire on the 24-pin power supply and any black wire interface. If the power supply is not broken, it can be started. Welcome to use Tencent Computer Manager to protect your computer in all aspects and in real time.

cannot. There is no integrated power supply on the PC motherboard and must be connected to the computer power supply to work. To start the computer, the motherboard must have at least the CPU, memory and graphics card installed.

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