Look for the little keyboard icon on your taskbar (generally) and switch the language back to your usual (US/UK etc), sounds like it might've switched to something else - no idea how/why it happens, but it does.
Look for the little keyboard icon on your taskbar (generally) and switch the language back to your usual (US/UK etc), sounds like it might've switched to something else - no idea how/why it happens, but it does.