Not a word about the host PC? It's a common item to look at this issue but I never ask for details since at every post you make, these words...
Note: If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.
Common issues are motherboard drivers and trying the rear ports.
I bought the Zen vision about 4 months ago and it hasn't given me any problems until now. I tried to connect it to the computer, and it did recognize it to a point (i.e., it brings up the MTP Media Player window asking whether or not I wish to organize, synchronize, etc), but the explorer that comes with it, the Sync Manager, and the firmware upgrade will not work. Nothing related to creative will recognize the player.
I reinstalled all the software that has come with it, and I have had no major hardware or software changes since the last time I've used it. I would appreciate any help offered and if something doesn't seem clear please ask.