Windows is not going to recognize the iPod. it is normal. You will have to put iPod in DFU with out it being on. Just count in your mind, or a stopwatch would work, to ten while pressing the home and power button at same time, let go of power (keep holding home) then wait for computer to react. Use the test Libsub program to help you as well, that let's you know if it is in fact in DFU mode.