I have a plug and play LS-10 erecorder. It works fine on all of my XP systems. When I pludg it into my Windows 7 64 bit system, "nothing" happens. Upon further investigation, the disk manager sees the dirves (there are 2), but no letter is assigned. I tried assigning, but I keep getting a message that asks me to refresh, restart or reboot, none of which works. I have tries to uninstall and install the devices - same result. I tried to assign the drive letters in command mode, but I get a "no volume" error.