Computer Showing File Not Found in Pen Drive, How Can I Fix It? Pen drives or USB flash drives are very useful portable devices to transfer data between PCs and Laptops. However, sometimes these drives can harm your computer by carrying viruses, malware and Trojan backdoors. These virus affected drives create an empty file or folder shortcut and make all your files and folders hidden. These shortcuts are not accessible and take you to nowhither while your existing folders are already hidden. You can remove the viruses from your Pen drive by scanning it with your antivirus software but this won't let you get back your files. In this article, you'll find the solution to retrieve your files from a virus affected USB drive. Let’s start from the start – Let assume that your Pen Drive is named as "GIRLIE" which is almost full with your stored stuff.