Computer not seeing BB
 

Any time I now connect my BB to my computer, Media Manager does not recognize it. It says no device is connected, please connect a device to view its contents. Or something along those lines. The acual Desktop Manager reads it but not the Media Manager.

I just got a microSD card and installed a new OS on both the computer and BB, could one of those be a problem with it?

Try this method instead...

How do I add media files to my microSD card? - BlackBerryFAQ