Ensure the Device status states, This device is working properly.In the Device Manager window, double-click Keyboards, then double-click the Keyboard Device.Confirm that the keyboard is enabled in the Device Manager:.NOTE: If the Device status states that the device is not working properly, remove each device driver under Mice and other pointing devices then restart the computer. Under Mice and other pointing devices, double-click each pointing device to ensure the device status states: This device is working properly.In the Device Manager window, double-click Mice and other pointing devices.NOTES: Because the Device Manager is a traditional Windows Desktop application, if you were not already there, the interface will change to the Desktop and the Device Manager window will open. Press the Windows Logo + X key combination on the keyboard and, from the list, click Device Manager.In the VAIO Control Center window, click Mouse and Keyboard or Input Device.In the Search screen, in the Search field type VAIO Control Center, and then press the Enter key.NOTE: The Windows Logo + Q key combination will also take you to the Search screen. Point to (but do not click) the lower-right or top-right corner of the screen, and then click to select the Search charm.Confirm that the touchpad is enabled in both the VAIO Control Center and the Device Manager.NOTE: If the keyboard and touchpad are functional in Safe Mode then this is likely a software issue. Start the computer in Safe Mode and confirm if the keyboard and touchpad are functional.Try holding down the Fn key and press the F1 key to see if the touchpad and touchpad buttons are re-enabled. NOTE: Some VAIO® notebooks include a feature which allows the touchpad and touchpad buttons to be disabled using the Fn+F1 keys on the built-in keyboard. Then re-add it, and delete the other keyboard language.Follow the steps below to resolve the issue: Once this is done, add a new keyboard (anything other than English United States), and remove the English (United States) keyboard. Repeat for all other non-English (United States) keyboards.
Click on any other keyboards in the Installed services list.On the General tab, make sure English (United States) - US is selected in the Default input language field.
If reseating the connection does not work you can also try removing the keyboard layouts and readded English-US: The steps start on page 59, and are quite easy to follow. You can try reseating the keyboard by following this guide: HP Pavilion dv7 Notebook PC - Maintenance and Service Guide. I would be inclined to believe this is a hardware issue.
I understand the "J" "K" "L" " " and "Enter" keys no longer work on your notebook keyboard, even after reinstalling drivers.
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