I have the same issue as Edx2x.
Went on vacation for two weeks, it worked fine when I left. I transported my FireLite to the office two days ago, and it worked fine. Now, reconnected to my home computer, it is no longer recognized. I have tried Device Manager Troubleshooting... no luck... I have tried shutting down the computer and re-booting... still not found. It does not appear in My Computer... and trying your suggestion, I right clicked on a file, went to "send to" and it was NOT present. I am at a loss as to why it is no longer recognized. Any other ideas?
Same problem here. No drivers available anywhere. 130 gigs in limbo. Works on my Toshiba, but not my Dell. Smartdisk Firelite 160 GB hard drive worked problem free for two years...now unknown device on the Dell.