I just finished installing XP Pro on my system, and there's an entry in the device manager for "SM Bus Controller" (with a question mark next to it).
I installed the core i5 CPU drivers for XP, and it's still there. All other devices/hardware have the correct drivers installed.
Mobo: MSI P55-GD65
CPU: Intel Core i5
Any ideas on how to fix this?
Download the very latest chipset drivers for yer P55 chipset either from the intel site or from the MSI site. This shud most prolly fix yer issue regarding to SMBus Controller.