One of the most frustrating problems when building a computer is pressing the power button after assembly is complete and nothing happens. This can be a headache as there could be multiple reasons for this. In order to help solve this annoying problem, PHP editor Baicao will guide you to have an in-depth discussion, analyze the common reasons that may cause the power supply to become unresponsive, and provide step-by-step troubleshooting steps to help you get your computer working normally as soon as possible.
First of all, we need to confirm what kind of unresponsiveness this is.
1. The power fan does not spin when the power is turned on.
Solution
Check the power cord Is there any problem? Have you connected the power strip? Is it firmly plugged in?
Check whether the cpu motherboard power supply interface is plugged in correctly! Even though it's facing the wrong way, it won't turn on even though it's plugged in.
Check whether the power supply is normal. Use a wire to plug in the green and black wires of the motherboard's power supply cable. If the fan rotates, it proves it's normal.
2. When the power supply fan is turned on, the screen does not display.
Troubleshooting: The computer starts normally and the screen does not display. Press the key on the 7 keypad a few times. If the keypad light turns off and on, it means the computer is running normally. It's just that the screen doesn't display. Now check to see if the display output line is connected to the graphics card normally! Graphics card graphics card! superior!
The keypad light on the top does not go out when pressed. It is usually because the memory module is not inserted securely. Re-insert it repeatedly. If it still doesn't work, there is something wrong with the motherboard or CPU.
Solution:
1. Plug in the power cord tightly, check the plug on the plug board, and confirm that the plug board is powered on.
2. Confirm that the wire from the host power supply to the plug-in board is good, then take the power supply and connect it to the 24P plug of the motherboard. Short-circuit the green and any black wires. If the power fan turns on, it means there is no problem with the power supply and the power fan does not. It means the power supply is broken, replace it with a new one.
3. After confirming that there is no problem in the above 2 steps, unplug the switch wire connecting the motherboard and the front panel of the chassis, and use a screwdriver to short-circuit the two pins of the switch. If the fan rotates, it means there is no problem with the motherboard. If the fan If it doesn't turn on, it's probably a motherboard problem, so contact professional maintenance personnel to handle it.
4. Short-circuit the motherboard pins and the fan will rotate, but there is no response when pressing the switch button on the front panel. This means that the switch button is broken or stuck. Replace with a new switch button, or remove the stuck button.
1. Take out the motherboard, remove the CPU and install it, fix the fan, plug in the memory and put it away.
2. Remove the covers on both sides of the chassis, install the power supply, and screw the motherboard tray screws in the chassis to the designated position.
3. Handle the motherboard baffle according to the interface position, snap it into the chassis back bezel, put the motherboard correctly into the chassis, and gently tighten the screws. For independent graphics, break off the small PCI-E baffle, insert the graphics card and secure it with screws.
4. Plug in the 24-pin power cord. If the 4-pin cord is too long, tie it into a knot.
5. Separate the front USB and audio jack cables with USB and AUDIO letters on the back from the chassis, and insert them into the USB pin slot and AUDIO pin slot of the motherboard respectively. Both are to prevent mis-insertion. The USB pin slot is usually in the lower right corner of the motherboard, and there is a USB mark under the pin slot. The AUDIO pin slot is generally located in the middle and lower left side of the motherboard.
6. Knot the switch, restart, hard disk indicator light and other wires on the chassis. Generally, this type of plug on the motherboard is adjacent to the USB. In the lower right corner of the motherboard, there are letters marking the corresponding plugs on the motherboard, such as HDLED. is the hard disk indicator light, RST is the cold start, POW-SW is the startup, SPEAKER is the alarm horn, and POW-LED is the power indicator light. Just plug them in one by one.
7. Remove the baffle at the optical drive position of the chassis (the card head can be pushed out from the back and removed). Put the optical drive in and secure it with screws.
8. Take out the optical drive and hard disk data cable. If it is a parallel port data cable, please confirm that there is an IDE interface on the motherboard. The serial port cable is generally longer. After forming a spiral shape with your fingers, you can insert it into the motherboard serial port port in sequence, and then plug in the optical drive and hard disk power cables.
9. Use tying thread to gather and fix the messy threads appropriately. Install the side covers in sequence. You're done, the next step is to partition the hard drive and create a system.
Purely personal experience, let’s discuss the shortcomings together. Reproduction is prohibited.
Method 1
First: First make sure that the tablet, the charging device and the cables between them are all connected.
Second: To confirm the problem with the connecting cable, try changing a connecting cable.
Third: Confirm whether it is a problem with the power charging transformer and replace the power charging transformer.
Fourth: Check whether the problem is caused by software. After backing up the data, reset the tablet and iPad and restore them to factory settings.
Fifth: If the above are all good, you can only send it for repair to see if it is a problem with the battery or other interfaces.
Method 2
1. Are you using the original charger? The new iPad 4 is a 12 W usb charger, and the iPad 2 and 3 are 10W usb chargers. Never use the wrong iPhone charger to charge your iPad, as it will be very slow and sometimes not charge at all.
2. Check the iPad’s tail plug to see if there is any metal piece that is lifted or damaged.
3. Replace the power socket and try to use a q1an9-style power socket.
4. To perform a forced restart, try to hold down the home button and power button for a while while the power is connected, wait until the white Apple logo appears, let go, and wait for booting.
First check whether the socket has power, and then test whether the remote control fails to respond when turned on. You can try using the emergency switch. If there is no response, you should start by checking the power supply of the indoor unit, looking at the varistor, fuse and transformer. If the emergency switch can be activated, check the temperature sensor first.
When the air conditioner fails to respond when plugged in, first make sure the socket in your home is good. I don’t know if your air conditioner plug has a fuse. If it does, the leakage plug may be broken. If it doesn’t, there is a problem with the power supply inside the machine. Finally, I will check the motherboard.
(1) The first reason is that the laptop's power adapter is damaged and cannot be powered on, or the laptop's battery is out of power, resulting in the inability to boot and a black screen. Solution: Replace the power adapter, or fully charge the battery.
(2) The second reason: The startup circuit of the notebook motherboard fails, such as clock, reset, power supply, MOS tube, etc., which may cause failure to boot, black screen, and I/O problems. Can't start the computer, black screen, etc. Solution: Send to after-sales service or repair shop to repair the motherboard.
The laptop cannot be turned on. The main reason is that the battery is out of power. You can try again with the power supply.
1. First insert the 24PIN in the power supply into the 24PIN slot on the motherboard. This item is the mainboard power supply line: after the motherboard power supply connection number.
2. Then there is the CPU power supply. Look at the motherboard. If it is 8PIN, just combine it and insert it. Generally, the CPU power supply is 4PIN. Insert the 4PIN interface in the power supply into the 4PIN slot near the CPU.
3. Then pay attention to whether your graphics card has a 4PIN interface. Generally, low-end graphics cards do not have it.
1.
The front panel connections of the chassis generally include front audio, front USB, power indicator light, hard disk indicator light, power on, and restart.
The wiring diagrams for these connections are generally explained in the motherboard manual.
If not, check that it is written on the motherboard. Pay attention to the position of the pins.
They are basically connected in this way. The HD-LED on the motherboard is the hard disk working indicator light, so just write the thread. There are: H..D.D.LED is plugged in. The SP-LED on the mainboard is the power working indicator light. Just plug in the positive and negative ends of the wire with "P" written on it. If the two indicator lights are plugged in reverse, the positive and negative ends are plugged in. Level, the light will not light up after power on. For the one that does not light up, just change the positive and negative directions.
2.
The RST on the motherboard is the reset button. Write RESET on the wire. Plug in the SW. PW-BN on the motherboard is the power-on button. Plug in the one with POWER SW written on the wire.
3.
SPEAKER is the front buzzer, divided into """-" phase; it can happen with ordinary speakers no matter how they are connected, but it is special here. Since the voltage value of 5V is provided on the " " phase, we must install it correctly to ensure that the buzzer sounds.
4.
The following is the front audio. The F-AUDIO on the motherboard is the location of the front audio interface. It is different from the USB. The USB has one less pin on the side and the front There is one less pin on the 4th pin for audio, just plug it into the corresponding position
5.
The front panel connection is complete, and finally connect the power supply and hard disk. The SATA data cable is in the shape of an inverted 7-digit line. Don't worry about plugging it in wrongly. If you plug it in wrongly, it won't go in. The hard drive movie cable is wider than the data cable and has a similar shape. Connect it to the hard drive
6 .
Just align it and insert it. The other end of the SATA data cable is plugged into the SATA interface of the motherboard. That's it, now connect the power supply to the motherboard.
7.
The motherboard is powered by 24P. The old motherboard used to be 20P, so I took it out and there are 4 active ones on the side.
8.
The CPU has 8P power supply, and there are also 4P power supply. Both the motherboard and CPU power supply are designed to be fool-proof. Don’t worry about plugging it in wrongly. If you plug it in the wrong direction, you won’t be able to plug it in.
9.
Connect to the corresponding interface. Look at the motherboard interface diagram above. The graphics card power supply is 6P, and there are also 8P. It can be disassembled, and the graphics card power interface is plugged in. That's it.
10.
The installation is complete. If your case is side-transparent, you can install a strip of polarizing light, which will look much better. If it is not side-transparent, there is no need to install it. You are good to go. For a chassis with back-wired cables, put the cables at the back so that it looks beautiful. After installation, untie the cables and tie up the ones that need to be tied up with zip ties to make it look more comfortable.
To plug the headphones into the assembled computer, you need to find the audio interface on the front or rear panel of the computer host. The following are common steps for plugging in headphones:
1. Find the audio interface: On the computer host, there is usually a front panel and a rear panel. Look for the jack with the audio logo on it. On the front panel, the audio connector is usually located near the audio input/output jacks. On the back panel, the audio connector is usually located between the expansion slot and the USB port.
2. Confirm the interface type: Headphones usually use a standard 3.5 mm (or 1/8 inch) stereo plug. Make sure your headphone plug is compatible with your computer audio interface.
3. Insert the headphone plug: Gently insert the headphone plug into the audio interface. Usually, the green jack is for the headphone output (audio output).
4. Confirm the connection: After plugging in the headphones, you should hear the computer's sound output through the headphones. If there is no sound, make sure the headphone plug is plugged in correctly and check your computer's audio settings.
Please note that specific insertion steps may vary depending on your computer model and manufacturer. If you encounter difficulty, it is recommended to consult your computer's user manual or contact the manufacturer for detailed instructions and guidance.
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