i have an external hard disk of toshiba which was working but my pc doesnt show it when i plug it in, wat may be the problem? Tags: Windows 7 Toshiba Last response: September 4, 2013 8:13 PM in Windows 7 Share Partiman Siwa September 4, 2013 1:00:18 PM searching for the driver More about : external hard disk toshiba working doesnt show plug wat problem lakerpt September 4, 2013 8:13:32 PM try and see in disk manager if the disk has a drive letter given to it or if it is initialized. (right click on "My computer" - select "manage" and look for disk manager. if there is a partition on the disk, you can give it a drive letter Can't find your answer ? Ask ! Publish Read discussions in other Windows 7 categories Configuration Customization Drivers Security Laptops !