USB2.0 drive on the issue of emergency ~ ~

First of all, no U disk problems.

I just format the computer, but after installed, inserted the disk U chassis, not only did not reflect the lower right corner of the screen, My Computer, there is no show ..

Windows can not load the hardware device drivers.driver may have been damaged or missing.(Code 39)

This is the Device Manager prompts me …I installed USB2.0 drive,

incomplete installation of the system after re-appraisal! !