OMG this is my exact problem too. purchased and use it on a brand new laptop, and a short while after installing my antivirus program, and after upgrqading to windows 8.1 it started acting up, and not being recognized on this PC, and I thought I had screwed something up, because it would work fine in any other PC. But after I read your second post about pulling it out just a hair, mine was immediately recognized. I dont think there is anything wrong with our pc’s now, I think the device is just not making contact when we push it in all the way on our particular machines. Thank you for posting your issue because I have been racking my brain to figure out what is going on.
If the guru’s want to check this out and see if it is a problem with particular hardware, my laptop is a Dell System Inspiron 17 7000 Series 7737 with USB 3.0 ports.
