I'm on the road and using my Flex 1500 portable. This morning it stopped working and I noticed that I was getting this error in Device Manager: "Flex 1500 Unknown USB Device Error (Device Descriptor Request Failed)." I also get a power state failure BSOD when I try to reboot with the Flex 1500 connected. I would appreciate tips on how to correct this problem. Perhaps I need to uninstall and reinstall PSDR 2.7.2? Or is there a simpler solution? Thanks for any help you can give me.