1. You can first plug the power adapter into the laptop and check whether the power light turns on. If the power light does not light up or Flashing, please replace the power adapter or repair the power adapter. If the power light is on but the computer won't turn on, you need to remove the battery from the laptop and reinsert it and try turning it on again.
2. 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.
3. The solution is as follows: Press and hold the power switch for four seconds to turn off the power, then restart to check whether it starts normally. Check whether the external CRT monitor displays normally. Check whether the memory is plugged in securely. Clear CMOS information. Try replacing the memory, CPU, and charging board.
1. You can first plug the power adapter into the laptop and check whether the power light turns on. If the power light does not light up or flashes, please replace it. Power adapter or repair power adapter. If the power light is on but the computer won't turn on, you'll need to remove the battery from the laptop and reinsert it and try turning it on again.
2. 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.
3. Charging: Connect the computer to the power adapter and wait for the battery to charge. You can try charging for a long time until the combustion light turns green. Press the power key: Your laptop may prevent the computer from turning on when the battery is low, preventing the device from shutting down during normal operation because the battery is not functioning properly.
4. The power adapter is faulty. If the power adapter doesn't provide enough power, or there's a problem with the power adapter itself, it may prevent your laptop from starting up. You can replace the power adapter and try to restart the computer. Internal hardware failure. If the hardware components inside the laptop are faulty, it may also cause the computer to fail to start properly.
1. The battery is low or damaged. If the battery is low or damaged, the laptop may not turn on. Try removing the battery and plugging the power adapter into a power outlet to see if you can start the computer normally. The power adapter is faulty.
2. If the power indicator light is on, there is wind from the cooling fan outlet, but the display is still black, this situation is mostly caused by a circuit failure or hardware failure inside the notebook, such as a loose memory module inside the notebook, a graphics card failure, and a display failure. Panel failure, etc. In addition to non-motherboard and graphics card failures, common LCD screen failures are common.
3. If the power indicator light is on, it means that the motherboard is over-powered, but it may not be able to be turned on due to some devices; 1. Use shortcut keys to increase the screen brightness and switch the display on and off to prevent the screen brightness from being too low or The computer screen is black because the screen has been turned off.
4. The Lenovo laptop cannot be started. There is no response when pressing the power button and the indicator light does not light up. This failure is usually caused by a damaged computer motherboard or battery, and may be a problem with the computer's power supply. As soon as the Lenovo notebook is turned on, the indicator light will come on, but will immediately turn off. The computer motherboard is short-circuited and requires specific testing.
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