The manual for the Decco indicates that no special drivers are required. And if you are seeing USB2 indicated in Device Manager it would SEEM to confirm that your Windows installation is sufficiently up to date to be able to handle the port without additional software, which would also seem to be confirmed by the fact that it worked initially.
But just to be sure let me ask the following questions, even though they apparently are irrelevant: What is the model and approximate year of purchase of the Toshiba laptop, and which Windows service pack has it been updated to? Are you using the software installation it came with + updates, or did you ever reinstall the software from scratch? If you reinstalled the software from scratch at any point, did you run an Intel Chipset Software Installation Utility?
Beyond that and the suggestions which have been offered by the others, and besides re-booting everything which I assume you've already tried, I would suggesting trying the Decco on both a different usb port and on a different computer. Unfortunately it seems conceivable to me that either the computer port or the usb interface on the Decco could be defective.
Good luck!
-- Al
But just to be sure let me ask the following questions, even though they apparently are irrelevant: What is the model and approximate year of purchase of the Toshiba laptop, and which Windows service pack has it been updated to? Are you using the software installation it came with + updates, or did you ever reinstall the software from scratch? If you reinstalled the software from scratch at any point, did you run an Intel Chipset Software Installation Utility?
Beyond that and the suggestions which have been offered by the others, and besides re-booting everything which I assume you've already tried, I would suggesting trying the Decco on both a different usb port and on a different computer. Unfortunately it seems conceivable to me that either the computer port or the usb interface on the Decco could be defective.
Good luck!
-- Al