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Built in keyboard sometimes does not turn on - Lenovo ThinkPad Yoga L13 Gen 2

Anonymous
2024-07-18T11:46:50+00:00

Sometimes (irregularly) when the computer is brought out of hibernation, the built-in keyboard does not start. It turns on on the startup screen (one with the Lenovo logo) and turns off (the keyboard, trackpoint and touchpad turn off.)

The problem can be fixed by restarting by holding down the power button, and entering and exiting the BIOS or UEFI diagnostics. When diagnosing, there were no problems, everything was normal (I checked the motherboard, processor, keyboard and memory.)

Warnings appear in the Event Viewer: The speed of processor x in group y is limited by system firmware. The processor has been in this reduced performance state for 71 seconds since the last report.
Googling the problem, it looks like throttling and overheating - there are problems with overheating.

I did not have a chance to try an external keyboard. I am unable to replace the thermal paste right now.

I'm interested to know if this is all caused by overheating or something else?

UPDATE: Found the suspected issue: when slightly tapping the bottom cover, the keyboard seems to disengage and reingage. Most likely a connector problem.

Windows for home | Windows 11 | Performance and system failures

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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  1. Anonymous
    2024-08-13T06:16:05+00:00

    I have tried it with wireless Bluetooth keyboard, and it works well.

    I have stated that the issue is some contact with the back panel.

    So, problem solved, for now.

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  2. Anonymous
    2024-07-20T08:09:30+00:00

    Hello, NovEclipse

    Welcome to the Microsoft community.

    Thank you for your feedback. Based on your description there is a high probability that it is a hardware issue. You can try to test the issue by waking up from hibernation with an on-screen keyboard or an external keyboard.

    You can follow the steps below to set it up:

    Click the Start button and select Settings (or press the Win + I shortcut). In the Settings window, select Easy to use. In the left-hand menu, find and click on “Keyboard”.

    Enable on-screen keyboard: In the “On-screen keyboard” section on the right, make sure the “Show on-screen keyboard in desktop mode” option is turned on. If you wish to use the onscreen keyboard even when you are on the lock screen, you may need to make further adjustments in Settings. Go to Accounts > Login Options.

    In the “Lock screen screen” section, make sure the “Show virtual keyboard on login screen” option is checked.

    If there is no problem with the screen or the external keyboard, it's most likely a problem with your hardware, as your description suggests.

    If there is a problem with both, we suggest you do a fresh install of windows and retest the issue. Please backup your important data before doing this.

    How to: Perform a Custom Installation of Windows 11 and Windows 10 or - Microsoft Community

    I look forward to your feedback which will help me locate your problem.

    Best Regards,

    Aaron| Microsoft Community Support Specialist

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