Hi NealG,

Welcome to the Community Forums.

This might be caused by bad drivers of even a static buildup in the device. These tend to be quite localized and can cause havoc on some columns/rows of keys, but it's not uncommon. Please try the troubleshooting below to try and remedy the issue:

Step 1. PMU - Static Discharge
- Remove all cables attached to the device (ac adapter, power, hdmi, external mouse/keyboard, etc)
- Ensure device is switched OFF
- Hold down power button for 60 seconds
- Re-attach all cables
- Connect the AC Adapter, then let the device charge for about 2 minutes (if it does) then start up as usual.

Step 2. Uninstall Keyboard Device + Drivers.
- Press the Windows key+X , select "Device Manager"
- Under "Keyboards"  - Select the device in question, right click and select "Uninstall Device" There might be more then one device listed.
- If prompted to uninstall drivers associated with the device, tick the box and continue.
- Perform a restart of the computer to have Windows install the most generic drivers for this device.

- In the event this does not bring it back, go to the device manager again, 
- Right click the keyboard device and select update driver.
- Select "Browse for drivers on your computer"
- Select "Let me pick from a list of available drivers on my computer"
- Select the latest keyboard related driver from the list and click "Next"

Step 3. System Board Updates

I'd suggest trying to download and install the newest Chipset / Serial I.O and Management Engine Interface drivers from the Lenovo Support Page.
Just plot in the serial number for your device and hit enter, might have to hit it twice. Then head to Drivers & Software then Chipset Section.

Regards

Voithos

Hi NealG,

Welcome to the Community Forums.

This might be caused by bad drivers of even a static buildup in the device. These tend to be quite localized and can cause havoc on some columns/rows of keys, but it's not uncommon. Please try the troubleshooting below to try and remedy the issue:

Step 1. PMU - Static Discharge
- Remove all cables attached to the device (ac adapter, power, hdmi, external mouse/keyboard, etc)
- Ensure device is switched OFF
- Hold down power button for 60 seconds
- Re-attach all cables
- Connect the AC Adapter, then let the device charge for about 2 minutes (if it does) then start up as usual.

Step 2. Uninstall Keyboard Device + Drivers.
- Press the Windows key+X , select "Device Manager"
- Under "Keyboards"  - Select the device in question, right click and select "Uninstall Device" There might be more then one device listed.
- If prompted to uninstall drivers associated with the device, tick the box and continue.
- Perform a restart of the computer to have Windows install the most generic drivers for this device.

- In the event this does not bring it back, go to the device manager again, 
- Right click the keyboard device and select update driver.
- Select "Browse for drivers on your computer"
- Select "Let me pick from a list of available drivers on my computer"
- Select the latest keyboard related driver from the list and click "Next"

Step 3. System Board Updates

I'd suggest trying to download and install the newest Chipset / Serial I.O and Management Engine Interface drivers from the Lenovo Support Page.
Just plot in the serial number for your device and hit enter, might have to hit it twice. Then head to Drivers & Software then Chipset Section.

Regards

Voithos