Keyboard keys have changed functions. 'S' key behaves like the Alt key, etc. Win 10, Lenovo E450.

[vinodvadakkadath]

Hello,I have a Lenovo Thinkpad E450 running Windows 10. Today morning when I powered it up I found that some of the keys are behaving like some other keys. For instance, pressing the 'S' key enables Alt key functions (menus are activated, Ctrl+S+Del brings up the Task Manager, etc.), 'B' and 'K' turn on the Scroll Lock. In addition, the P key is not working at all. I found these via the on-screen keyboard. The remaining keys seem to be working.I ran the troubleshooter and reinstalled the drivers. Windows is up to date. I restarted the machine several times. I also scanned the entire system usi

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