Laptop power adapter light is off

Why does the laptop charger not light up?

The laptop charger does not light up and cannot be turned on. The reasons are as follows: The power adapter is damaged. The laptop power adapter is damaged and cannot be turned on. Power on. Or the laptop battery is dead, causing the computer to fail to turn on and display a black screen. Boot circuit failure. The laptop motherboard has a boot circuit failure, causing the computer to fail to boot.

Check whether the computer adapter and charging interface are in poor contact or loose. Failure in the circuit or internal parts of the computer adapter will cause the power light to not light up. In this case, just choose to replace the computer adapter. If the interface is loose, , poor contact, you can consider replacing the charging interface.

(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.

Why the laptop charging light does not light up

Check whether the computer adapter and charging interface are in poor contact or loose, etc. A circuit or internal failure of the computer adapter will cause the power light not to light up. In this case, directly Just choose to replace a computer adapter. If the interface is loose and the contact is poor, you can consider replacing the charging interface.

Power socket problem Check whether the power socket is loose or damaged. If so, you need to replace it with a new one. Check whether the power socket is blocked by debris. If so, you need to clear the debris.

If the laptop power light does not light up in the above two situations, there may be a problem with the laptop's motherboard.

The power circuit or charging circuit or battery of the notebook motherboard is damaged, causing a short circuit. So as soon as the power is plugged into the laptop, the power is protected so the light goes out. There may be problems with the adapter's 220V power line, 12V output line, or internal problems within the adapter. However, the adapter is relatively easy to repair. Most of the time it's a diode that breaks down the 'bridge'.

If the laptop power indicator does not light up, first remove the battery and see if you can start the laptop with power on. If so, then the LED power indicator is broken. If it doesn't work, the computer's adapter may be broken.

The indicator light does not light up even when the laptop is plugged in, nor does it turn on. How to solve the problem?

We can try plugging and unplugging the plug again. If the indicator light still does not light up, it should be The power adapter is broken. If the battery is used as the power source, check whether the battery is installed correctly, whether the battery model is the original battery, whether the battery is fully charged, etc.

Have you made any hardware changes recently (such as adding new memory) or connected external devices? If so, it is recommended that you restore the previous hardware configuration and disconnect all external devices to see if you can boot normally.

) First remove the battery, unplug the power plug, press and hold the power button for about 5 seconds, then plug in the power to see if it can turn on. If it still cannot turn on, continue with the following steps. 2) Remove the battery, unplug the power plug, and use a Phillips screwdriver to open the screws on the back cover.

Solution: Replace the power adapter, or fully charge the battery.

If you encounter a situation where your laptop cannot be turned on (cannot be turned on without turning it on), the problem may be caused by static electricity on the motherboard. For this situation, follow the steps below. (1) Please plug and unplug the adapter and battery.

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