[tejas]

I have an HP Envy laptop running Windows 10. This morning when I powered up the laptop and tried to enter my pin the letter keys (a,b,c) did not work. I'd press a key and nothing happened, no movement of the cursor, no error, nothing. However, the number keys did work. Yes, I pressed the number lock key to see if that was an issue. I then clicked on 'forgot my pin' and went through a verification process which required me to enter my alternate email address to get a verification code. Surprise, the letter keys worked fine which allowed me to enter the email address and get a code. After entering the code I got a warning about changing my pin and did I want to continue or cancel. I selected cancel and the normal Microsoft screen appeared just as it would have if I had been able to enter my pin at the very beginning. Everything worked fine. However, the next time I powered up the laptop the letter keys once again did not work and I had to again go through the 'forgot my pin' process.

Any ideas what is causing this or how I fix it? Thanks