physcial memory with blue screen pblm

Hi frnds,
i am under going a pblm while accessing a net using datacard.when i insert my datacard system restart and displaying a message
physical memory dumping in blue screen.

technical code :STOP:0X000000CE(OXA99AEBB8,0X00000008,OXA00AEBB8,0X0000000)

USBSTOT.sys

DRIVER_UNLOADED_WITHOUT_CANCELLING_PENDING_OPERATIONS

advanced thnks for u reply.