Usb 3 and ethernet not working

hi...
i bought a new pavilion model 500-400na with windows 8.1.. i format it and installed windows 7 64bit... now my usb 3.0 and etherent `drivers is not compatabile and they are not working..
please someone help me to solve this problem...
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Hi:
I can't get to the HP support page to find the drivers you need but if you install the AMD chipset driver from the link below and reboot, you will be able to get the USB ports to work.
http://support.amd.com/en-us/download/chipset?os=Windows%207%20-%2064
Ethernet: DL and install the second driver on the list.
http://www.realtek.com.tw/downloads/downloadsView.aspx?Langid=1&PNid=13&PFid=5&Level=5&Conn=4&DownTy...

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