For Windows 7/8 which is simplied or not original 64 bit, copy the file 'usbser.sys' from 'mdmcpq.inf_amd64_neutral_fbc4a14a6a13d0c8' to C:\Windows\System32\drivers, then run 'dpinst-amd64.exe' in 'drivers'. 32 bit, copy the file 'usbser.sys' from 'mdmcpq.inf_x86_neutral_9f203c20b6f0dabd' to C:\Windows\System32\drivers,then run 'dpinst-x86.exe' in 'drivers'. if not successful, do as what says below 64 bit, copy 'mdmcpq.inf_amd64_neutral_fbc4a14a6a13d0c8' to C:\Windows\System32\DriverStore\FileRepository, then run 'dpinst-amd64.exe' in 'drivers'. 32 bit, copy 'mdmcpq.inf_x86_neutral_9f203c20b6f0dabd' to C:\Windows\System32\DriverStore\FileRepository, then run 'dpinst-x86.exe' in 'drivers'.
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