That's strange, maybe it is not compatible with your operating system. You can try going to the bottom left hand of your computer and clicking on the windows icon and then choose "computer" on your list of options to see if your computer is reading the device. Maybe you need a new usb leap pad connector cord.
Did you give the leappad a profile name it will not connect otherwise if you did maybe you need to dowload leapfrog connect from the website. I had issues with another toy and emailed customer service and got an answer,over the phone was difficult to undertstand and I was given the wrong information
i did not have any problems connecting. all i did was follow the step by step instructions. your leappad would show that it is connecting, you should also see stars running on your leappad, while that is happening it means that they are trying to find u and it also took a little while for them to fine me . ( please make sure and sign in on your leappad your kid name, before u try to connect)
Have you downloaded leapfrog connect first? And after downloading, and signing up make sure keep it on when plugging in the leappad. Also your leappad needs to be charged. If it still doesn't work, make sure the usb cord is plugged in all the way. Try to change port, if all failed, contact leapfrog customer service . Good Luck