Windows 10: login screen automatically any search box filling with filling with number 3 continuously

Every where search box filling with number 3 & windows welcome login screen automatically filling with numbers i can't do type any adding 3 to any word type in searbox or password login screen.

:)

 

Password box at login screen is automatically filled with dots.

Password box at login screen is automatically filled with dots in Windows8.1

 

password box filled with dots

password box at login screen is automatically filled with dots....plz tell me how to end this issue

 

Black Dot and Numbers filled up in the password box and the Notepad

Hello,

There are several ways to troubleshoot sign-in issues in Windows 10. Since the system automatically fills out the password box with black dots and already did a few troubleshooting steps, we suggest creating a new user account to see if this issue will occur
on a new user profile. This will help you check if your current user account is corrupted. To do this, simply follow the steps below:

• 
  Select the Start button, then select Settings > Accounts > Family
  & other people > Add someone else to this PC.
  
• 
  Type a user name, password, password hint, and then select Next.
  

Should you have further questions, please let us know.