I never used this before, so I'm not sure. I'm guessing it's the command line in the program you downloaded? It looks complicated, but I'm sure there are other means on fixing that USB drive.
Are you having problems with your other USB devices sometimes? Or is it only the thumbdrive having the problem?
Sometime, the PC's operating system may take as long as 5 minutes to find a device. It goes through a process called enumeration. Flash drives can take up to a minute to be seen. Try just plugging it in, don't fiddle with anything, and have patience. Limit the number of USB devices to two (or unplug all your other USB devices and just plug in your thumbdrive to see what happens). If that doesn't help, I'm thinking of trying to use a USB active hub.