Unfortunately you cannot update your drivers from AMD. AMD only offers 'generic' drivers which will not work correctly with the Sony custom drivers, read here ..so if Sony supports Windows 8 for your version laptop, then they will have drivers for it. Not all laptops are Win8 supported and should use the OS it was designed for. There is a Sony Viao laptop forum where you may get some ideas/help.
Intel I7 960 @ 3.87ghz *Intel DX58SO *HIS HD6970 2gb *Corsair TX650M *2x4gb Corsair XMS3 *WD Black 1TB *Windows 7 Home Premium 64bit *Gateway HD2401 24" 2ms 1920x1200 ***Asus N71Jq laptop *Intel I7 720QM Processor *Mobility Radeon HD5730 1gb *8gb Ram *Windows 7 64bit
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