Hello, I really need help with this. I just bought a external harddrive and my computer won't recognize it. Here is the background:

My fingerprint READER and PRINTER worked fine through USB. I plugged in my external HD and my computer WOULD not recognize it. I read up on it and it said try unplugging your other USB devices. I unplugged all USB devices (except keyboard/mouse) and plugged in my external HD. My computer recognized it. I go to plug in my external HD again a few days later and it will not recognize it anymore. Now, when I plug my other USB devices in (fingerprint reader/printer), my computer will not recognize those now. Does anyone know why my USB's are acting up like this??? I could not FIND this problem on the forum.

Thanks!

MikeGet an externally powered USB hub.But I really don't think it is a power issue because they all worked fine at some point. My computer just won't recognize anything anymore. Nevermind...they seem to be working again. I just don't know why they work when they want to.

Thanks!