1) Open "My Computer" -- Tools -- Folder Options -- Select "Show all files and folders" under the Hidden Files and Folders section, then click OK.
2) Open the Run dialog, input `cmd` to enter the command line interface. Navigate to the infected drive letter (for example, if your USB drive is G:, type `cd /d g:` and press Enter). Then display all files using the command `dir /a`. Check if there is an `autorun.inf` file. If it exists, delete it with the following command: `del autorun.inf`. Repeat this process until all `autorun.inf` files across all drives are deleted.
3) Now you can safely open "My Computer". Find and delete all executable applications (.exe) that have the same name as the folders.