Thx for the replay.
The Acer Support web site is Acer Support: Downloads & Support Documents
And AO725 I think is Aspire One 725-0802
I select the correct windows version and download the usb drivers
but doesn't work nothing happens.
And what is SM Bus Controller?
I am about to install the correct VGA_AMD driver
, I tell you how goes after restart. (when finish the download)