Operation Steps:
The graphics driver installation error may cause the brightness adjustment function to malfunction and so on abnormal condition. Therefore, you are required to install the driver correctly as follows.
The first step is to check the label on the bottom of the machine to confirm the model
The second step is to download the integrated graphics driver and install
Serial number of CB or LB at the beginning of the model please download:
WIN8 64-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=35914&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Win7 64-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=35684&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Win7 32-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=35683&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Host number WB or ZB at the beginning of the model please download
WIN8 64-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=35918&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Win7 64-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=36060&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Win7 32-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=36058&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
The third step is to download the standalone graphics driver and install
This step does not distinguish between host numbers
WIN8 64-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=37207&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Win7 64-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=37205&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215
Win7 32-bit
http://support1.lenovo.com.cn/lenovo/wsi/Modules/DriverDetail.aspx?ID=37204&MachineNameOmini=LenovoG480 &searchtype=1&logictype=1&machineid=-9332&isseachone=true&isbackpage=false&ptype=2 &typename=lenovo+g480&from=select&ptid=6215