Oregontinker, thank you very much!
I looked a whole day for drivers for that SM Bus Controller but couldn't find them anywhere.
I had a Toshiba Satellite L505D-GS6000, who's Windows 7 I wiped and installed XP Pro instead. Toshiba made it really hard to be able to put XP instead of their Default OS: Win 7
My second hardest thing to find were the XP drivers for the onboard video card: ATI Mobility Radeon HD4200. So here they are for those of you who still need them: http://forums.amd.com/game/mes...id=264&threadid=127287
(Click on the link from 'tcsenter' user)