The computer is not powered on, and the computer is not responding when it is powered on

24 Don't think about it, your plug-in board must be broken, the power supply is not short, you will turn it off. There is a high chance that the plug-in board will be short-circuited and eventually broken.

It's possible that the switch is broken. Open the case, look at the place where the switch is connected to the motherboard, unplug the plug, find a change cone and touch the two pins, if it can be turned on, it is the problem of the switch. The switch is about one dollar.

Do you mean the power supply in the main chassis, if not, the power supply is broken.

Check the power interface of the motherboard, does the CPU fan turn after pressing the switch?

Unplug the memory from the motherboard and clean up the cheats and memory slots.

It seems that the slot is loose, and it should be okay to check and wipe it clean.

How did you check the power supply?

Summary. 1. Check whether the fan of the host is still rotating, if the fan is rotating, it is a problem with the hard disk, and it will be fine to replace the hard disk in time. 2. There is a problem with the computer's battery, and the computer's battery will be charged for a long time if it is not charged for a long time.

3. Look at whether the keyboard light is on, and the keyboard light is on, which means that it has been powered on. If it can't start, unplug the power cord, then press the switch a few times, plug in the power cord, and try it on.

1. Check whether the fan of the host is still rotating, if the fan is rotating, it is a problem with the hard disk, and it will be fine to replace the hard disk in time. 2. The battery of the computer will be charged for a long time without charging, which will lead to a longer charging time. 3. Look at whether the keyboard light is on, and the keyboard light is on, which means that it has been powered on.

If it can't start, unplug the power cord, then press the switch a few times, plug in the power cord, and try it on.

The motherboard is not powered on.

Kiss, maybe the motherboard is burning.

Yes? Just bought.

1.Judge the quality of the computer power supply Step 1, first connect the host power supply (ATX), press the slider down the host switch button, if it can't be powered on, and then unplug the power supply connected to the motherboard. Step 2: Use tweezers to short-circuit the green and black wires of the power supply, and check whether the fan of the power supply is rotating.

If the power supply fan turns, it means that the power supply is good, and the fault is on the host side. Step 3: Judge whether the computer host switch is good or bad. Connect the ATX power cord to the motherboard, pull up the switch pins and reset pins on the motherboard, and use the tweezers to short-circuit the switch needles to trigger the power switch.

Step 4, if the short-circuit switch pin triggers the power supply and still can't turn on, it means that the motherboard really can't trigger the boot, and the motherboard is removed from the reedTake it out for overhaul. Step 5: Remove the motherboard and clean the dust on the board first, so as not to hinder maintenance.

First of all, look at the motherboard to see if there are any components burned out, bulging, and whether there are burns or broken wires on the circuit board. Step 6, put the motherboard in place, plug in the CPU dummy load, and plug in the power supply. Plug in the motherboard test card and get ready for service.

Taking a desktop computer as an example, the reasons why the computer power supply is not powered on are as follows:

1. The main plug is loose.

Sometimes I accidentally touch the socket and plug of the computer, causing the plug to loosen, and the computer cannot be turned on due to the divine match. You can check the plug area of the main unit and monitor.

2. The wire is interrupted.

It is relatively easy to check if the plug is loose, but if the power cord is broken in the middle, it is difficult to check it. Check whether the wires are energized and must take protective measures.

3. The switch of the host is broken.

The host of the computer is a place that is often used, if it is turned on once a day, then it must be pressed once a day, and it is easy to break over time, you can replace a switch to test it.

4. The power supply of the host is broken.

The power supply of the host computer plays a role in stabilizing the voltage of the host computer when the computer is running. If the power is cut off frequently, it is easy to cause damage to the power supply, you can replace an electric beam finger source to test it.

5. There is too much dust inside the host.

Because in order to have good ventilation, there are many holes on the main unit, so the host of the desktop is the most prone to dust, and we have to clean it regularly, otherwise it will cause the motherboard and CPU to start poorly.