My USB flash drive is currently unusable because it somehow (quite suddenly!) became write protected. I have googled around and tried many solutions to this problem, but none of them have worked so far. Here are some of the solutions I've tried: The drive has no tangible switch or button. Formatting the drive won't work, even in command line, even "low level formatting", because the drive is (after all) write protected. Changing certain registry keys to 0 doesn't seem to work. Repair_Neo2.9.exe says "USB Flash Disk not found!" One factor that may make it more difficult to find a solution: I have no idea what the make or model is, because I received the USB flash drive from my university as a gift. So if anyone knows how to find the make and model, that alone might be helpful. Any ideas? Thanks.