Hello I've got a problem with my SM Bus Controller and have been searching around the internet and old threads within the site and followed some of the things suggested i.e. reinstalling and updating motherboard drivers via website and CD, Chipset drivers but still when i check device manager and scan for hardware changes it comes up saying theres a problem showing the SM Bus Controller as an other device yellow question mark with the yellow cirle with a black exclamation mark. First noticed after a problem with the computer. Computer was running hot so cleaned the dust out but took the heatsink off and had to replace and used thermal pads. PC would boot but freeze. Tried allsorts including clearing the CMOS but it still froze even in BIOS. Eventually got it back up and running by replacing the thermal pad with proper thermal insulation material. Computer started but was running like a mad cow so reinstalled the motherboard drivers and drivers for the chipset then noticed SM Bus Controller wouldnt resolve. Forgot about the problem as its not really causing any problems. Computer crashes if playing games but its not a regular thing and its mainly sound files that are causing BSODs. Don't know if this is caused by the SM Bus problem but Windows updated the AC'97 device tonight while trying to solve SM Bus. Seen on one thread that there should be a file in the inf folder and checked but nothing is there (with regards to the file) but they were using a different motherboard with an sis chipset. North Bridge SiS 746FX South Bridge SiS963L Motherboard ASRock K7S8X Any help on what to try next would be greatly appreciated.