USB Auto-detection not working

I have a Latitutde e6400 running windows 7 pro.  According to Device manager the following USB Drivers are in place and working:

         Universal Serial Bus controllers

             Generic USB Hub

             Generic USB Hub

             Generic USB Hub

             Generic USB Hub

             Intel(R) ICH9 Family USB Universal Host Controller - 2934

             Intel(R) ICH9 Family USB Universal Host Controller - 2935

             Intel(R) ICH9 Family USB Universal Host Controller - 2936

             Intel(R) ICH9 Family USB Universal Host Controller - 2937

             Intel(R) ICH9 Family USB Universal Host Controller - 2938

             Intel(R) ICH9 Family USB Universal Host Controller - 2939

             Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293A

             Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293C

             USB Composite Device

             USB Composite Device

             USB Composite Device

             USB Printing Support

             USB Root Hub

             USB Root Hub

             USB Root Hub

             USB Root Hub

             USB Root Hub

             USB Root Hub

             USB Root Hub

             USB Root Hub

However, whenever insert an external hard drive/USB drive into any of my drives, the PC does not recognize it (never shows up in the root of Explorer).  This also happens when I instert my T-Mobile Jet Stick, which doubles as a USB drive as well.  

However, the MS Mouse that I have been using for the past several months is recognized (still) and does work fine.

I have checked the following services per another post:

    SSDP Discovery         Status= started

    UPnP Device Host    Status=started

At this point, I have run out of ideas.  Can someone please help?

Thanks!