I have a problem with this Pen Drive. I can see it in Disk Management, but cannot format it, I get a message that an unexpected error occurred. I can Format it using Acronis Disk Director, and have done so but no change. I have tried to update the driver, but It says the latest driver is installed. I have uninstalled the driver in Device manager (It shows up there) and rebooted with no change. Device manager says this device is working properly. I am Windows 7, but It works on my friends Vista computer. Any ideas at all, I don't really want to get rid of it.