Hi, I'm Sandy and I look forward to help you today with the best answer possible.
I'm sorry about the issue.
I will work with you until it gets fixed. This is a question and answer session. Please do not hesitate to reply back to me at the box given below.
Please follow these steps once:
A. Put the computer in sleep mode and then restart it.
B. Put the computer in hibernate mode and then restart.
C. If not fixed:
Turn off the laptop.
Disconnect the power cord.
Now unplug the battery. You can turn it over to remove the battery.
Hold down the power button on the laptop for 1 minute.
Now, connect only power cord and restart it.
1.In Modern UI Start Window, search for "Device Manager" and press ENTER.
2.Expand "Keyboards." Right-click the entry for the keyboard nested under "Keyboards."
3.Then select "Uninstall."
4.Restart the computer. The computer will reinstall the drivers for the keyboard.
Step E: Please connect external USB keyboard and then follow the steps:
Some hidden malware/spyware/adware could be causing this issue:
I suggest you to scan your computer using free version of Super anti-spyware software. This will remove all of the malwares, spywares and viruses from the computer.
Note: If you already have installed Anti-virus programs like Norton, mcafee, CA, kaspersky on the computer, still I suggest you to download and install Super anti-spyware as the Anti-virus program does not remove Malwares/adwares/spywares effectively.
You can download the free version using the link given below:
Please run quick scan to complete it in 15-20 minutes.
Please clean/remove the bad cookies when the scan is over.
Restart your computer.
Step F: . If still does not work:
Please clean the keyboard or check bad connection or folded ribbon cable:
If you have any other query regarding this issue, please do not hesitate to let me know.
Please take a second to rate my service by clicking stars at the top of the screen then submit. Bonus/tip is highly appreciated.
Thank you very much,