Fixing a Lenovo Y540 laptop that has a black screen and a flashing power button after a random shutdown


How can I fix my Lenovo Y540 laptop that randomly shut down and is now stuck on a black screen with a flashing power button?

I tried to restart it several times, but it either showed a blue screen or a message about repairing itself by going back to a previous date. Neither option worked and it returned to the black screen. The laptop is plugged in and the fans are sometimes running very fast.


If you have a Lenovo Y540 laptop that suddenly turned off and won’t turn on again, you might be facing a common problem that affects many laptops of this model. The laptop may be stuck in sleep mode, or it may have a hardware issue that prevents it from booting up normally. In this article, we will show you some possible solutions to fix this problem and get your laptop working again.

Solution 1: Hard reboot

The first thing you should try is a hard reboot. This will force the laptop to shut down completely and clear any temporary files or settings that may be causing the problem. To do a hard reboot, follow these steps:

  • Remove the battery and unplug the AC adapter from the laptop.
  • Press and hold the power button for 30 seconds.
  • Reinsert the battery and plug in the AC adapter.
  • Turn on the laptop and see if it boots up normally.
  • If this does not work, try the next solution.

    Solution 2: Use the NOVO button

    Some Lenovo laptops have a special button called the NOVO button that can access the recovery mode. This mode can help you troubleshoot and restore your laptop to a previous state. To use the NOVO button, follow these steps:

  • Locate the NOVO button hole beside the power button or on the side of the laptop.
  • Get a straight pin and press the NOVO button to enter the Lenovo Recovery Mode.
  • Select the System recovery option in the NOVO menu.
  • Wait for your laptop to boot up and follow the on-screen instructions.
  • If this does not work, try the next solution.

    Solution 3: Reseat the RAM

    Another possible cause of the black screen problem is a loose or faulty RAM module. To check and reseat the RAM, follow these steps:

  • Turn off the laptop and remove the battery and AC adapter.
  • Open the back cover of the laptop and locate the RAM slots.
  • Remove the RAM modules and clean the contacts with a soft cloth or an eraser.
  • Reinsert the RAM modules and make sure they are seated properly.
  • Close the back cover and turn on the laptop.
  • If this does not work, try the next solution.

    Solution 4: Connect an external monitor

    If none of the above solutions work, you may have a problem with the laptop’s display or graphics card. To test this, you can try connecting an external monitor to the laptop and see if you get any display from it. To do this, follow these steps:

  • Turn off the laptop and connect an external monitor to the HDMI port or the USB-C port of the laptop.
  • Turn on the external monitor and press the Fn + F7 keys on the laptop keyboard to switch the display mode.
  • See if you get any image or message on the external monitor.
  • If you do, then your laptop’s display or graphics card may be damaged and need to be replaced. If you don’t, then your laptop may have a more serious problem that requires professional help.


hope this article was helpful and you were able to fix your laptop. If you have any questions or feedback, please let me know. 😊

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