Visual studio keyboard doesn't work

In my VS2008, suddenly, I can use just letters, no enter, space, delete, backspace, or any other keys. Any advice how to fix this? Keyboard is working perfectly in other applications. Thanks.

How do I enable shortcut keys in Visual Studio?

All keyboard shortcuts in VS Code can be customized via the keybindings. json file. To configure keyboard shortcuts through the JSON file, open Keyboard Shortcuts editor and select the Open Keyboard Shortcuts (JSON) button on the right of the editor title bar. This will open your keybindings.

I was having this problem several times a day. Make sure the Language setting is set to "Same as Microsoft Windows" under Tools -> Options -> Environment.