after installed device ,but the device manger show other devcices

T

tsingchen2008

i developed a usb device driver,when i installed ther device,and the device is working well,but in the device manger,the device inf file infomation classguid is lost.why can it happen???i open the regedit,and the the path dont have the classguid informationi set the class=usb and the classguid={36FC9E60-C465-11CF-8056-444553540000},but the path [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{36fc9e60-c465-11cf-8056-444553540000}] do not have my device information.and also in the service,the Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_1D6B&PID_0100\7&26

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