Troubleshooting:8.1 keyboard won't work after log in. 2 machines affected at the same time Error

8.1 keyboard won't work after log in. 2 machines affected at the same time

Both my surface pro and my newer Lenovo t440s had keyboards that stopped working today.
After typing in the password to log in, the keyboards don't work.
both machines are fully updated.  on the Lenovo I tried doing a full system reinstall, but no luck.  
Thanks for any help you can offer.

Anwsers to the Problem 8.1 keyboard won't work after log in. 2 machines affected at the same time

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Because of this 8.1 keyboard won't work after log in. 2 machines affected at the same time error, Windows can fail in starting some processes and the system's performance can significantly slow down. In some cases, Windows has problems starting up and the system can freeze.

Lastly, this error 8.1 keyboard won't work after log in. 2 machines affected at the same time can even result in the Blue screen of death error message, just like other critical Windows errors. If any of the above problems and symptoms occur in your PC, then you should immediately seek to resolve this problem.

In order to resolve 8.1 keyboard won't work after log in. 2 machines affected at the same time error or repair the corrupted and damaged Windows files, you will need a 8.1 keyboard won't work after log in. 2 machines affected at the same time error repair tool. There is more than one method of treating this kind of error code, and here is how you can manually do it:

1. Start the computer and log in as administrator
2. Go to the start button and select All Programs. Go to Accessories, System Tools, and then System Restore
3. Click on System Restore and in a new window, select the 'Restore my computer to an earlier time's option and click Next
4. On the new confirmation window that appears, click Next
5. Restart your computer after the restoration has been completed

Recommended Method to Fix the Problem: 8.1 keyboard won't work after log in. 2 machines affected at the same time:

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1. Click the button to download SmartPCFixer . Install it on your computer.  Open it, and it will scan your system. The errors will be shown in the list.

2. After the scan is finished, you can see the errors and problems need to be fixed. Click Fix All.

3. When the Fixing part is done, your computer has been speeded up and the errors have been removed

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