I just completed the same operation and encountered three issues which I fixed- one of them was with the SM Bus Controller. I now have a "clean" device manager listing with no exclamation points.
Here were the three issues and what fixed them:
Issue #1: Windows XP Pro couldn't find any connected hard drive during the initial installation process.
Solution: Using advice found on the HP site (
http://h10025.www1.hp.com/ewfrf/wc/document?lc=en&cc=us&docname=c00758841&dlc=en&product=1842155 ), I disabled "Native SATA Mode". The other option is to obtain and use the driver during the install process; probably a better option... but the needs of my project were such that this was unnecessary.
Issue #2: Many DV6000 HP drivers did nothing when installed.
Solution: Using the product number from the sticker on the bottom of the laptop I did a driver search on HP's support site and learned that my particular machine was a dv6000t. All labels on the machine list dv6000. Once I used 6000t drivers, I was quickly down to only a few question marks in device manager.
Issue #3: The "SM Bus Controller" appears in device manager as an unknown device.
Solution: Checking the "Device Instance ID" of this device shows that the Vendor ID is "8086"... Intel. Some further searching on the Device ID ("DEV_27DA") led me to discover that I needed to install Intel's "INF Update Utility" found here:
http://downloadcenter.intel.com/Detail_Desc.aspx?agr=Y&ProductID=816&DwnldID=16026&strOSs=44&OSFullName=Windows*%20XP%20Professional〈=eng
Once installed, the device is listed as "Intel(R) 82801G (ICH Family) SMBus Controller - 27DA"
I hope this helps future installers, if not the original poster (since about five months have elapsed!)
-Cornelius