Vista - The password enter frame can't be active without the mouse

My OS is Vista SP1, here is a small problem which do not exist in the Vista
without SP1. When the Welcome frame comes out, the frame for entering
password is not active, you need to use the mouse to click the frame to make
it active. This is not convenient. My touchpad cannot do this, I only can
use the mouse, and my setting is OK, when the mouse is pull out, the pad
should be working, but t didn't on the Welcome Screen, and the pad works
well after I log in.

Hi Gloomy,

You can also use the 'Tab' key to achieve the same result. Simply keep
pressing the key, either on its own or with the 'Shift' key until the
relevant option is highlighted. This is true for all dialogue boxes.
Dwarf

"Gloomy" wrote:

Thank you Dwarf, but what you said I have tried before, maybe I haven't
press enough times

Here still has this question, why the frame is not active? It should be
active as in the OS without the SP1. Maybe it's a bug ...