Sm Bus Controller

Heyy, I downloaded a hewlett-packard hardware update from Windows Update, and now my Sm Bus Controller has an exclamation mark beside it and my computers being screwy.

I have a Compaq Presario SR1610NX,
Windows XP
Home Edition
Version 2002
Service Pack 2

AMD Sempron Processor 3200+

Anyone know how I can fix this?
Thanks