SM Bus Controller drivers not installed

My mother's Presario SR1610NX crashed and I replaced her hard drive. Because she's lost the restore CDs, I used an unused installation of XP that I had. I finally got all the drivers, etc, downloaded and things seemed to be ok, but I keep getting an error on "SM Bus Controller" - not installed. I downloaded the ATI Catalyst software/drivers but that didn't fix the problem. I'm totally confused - is this a problem with a graphics driver, or with the main chipset driver? Where can I get this "SM Bus Controller" software? Thanks -

 

Chipset.
http://h10025.www1.hp.com/ewfrf/wc/...&dlc=en&lc=en&os=228&product=1146755&sw_lang=

View the directions.

Cheers..

 

Thank you SO much! I looked for this for two hours last night, don't know why i didn't find it - but the download fixed my problem!!