thinkpad t43p vista upgrade xp keyboard mouse not

ThinkPad T43p -> Vista Upgrade from XP -> keyboard&mouse not

Hi All,
I upgraded one of my Windows XP Versions on an IBM ThinkPad T43p with Vista Beta 2. The upgrade process itselfe finished without any problems (even 1600x1200 Display was detected) BUT I cannot login because neither Keyboard nor Mouse (integrated and USB) are working. When computer starts, the led of the logical mouse is on. During boot the led switches off.
What can I do? Trying in save mode didn't worked also.
Thanks for any response Johnny

Windows Vista

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