Pilot for missing SM Bus controller after the clean install

did a clean Windows 7 Home Premium installation and two USB ports does not work, went to the Manager of peripherals and other devices beside the SM Bus controller and controller Universal Serial Bus (USB), there are two exclamation points. 

I tried looking on the net and advice has been updated of the drivers, so I tried cela it via Device Manager and he always tells me that there is no available drivers / pilots didn't need?  Yet, there are these two points of exclamation mark beside SM Bus controller and universal serial (USB) Bus controller.

 

the system is:

HP Touchsmart 520-1085 UK

AMD Radeon HD 6550 has (chip type is: (0x68C7))

6 GB of RAM

Intel Core i5 - 2390 T CPU @ 2.7 GHz (4 processors). ~ 2.7 GHz

any help appreciated

two USB ports are working

Tags: HP Desktops

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