Please check the following.
1) Check the USB cable connected properly: Drive Side micro USB plug seats fully so you should not see any space between plug and the drive housing.
2) If you hear bell sound while connecting the drive that is a good sign.
3) Now “right click My Computer icon and select properties”.
4) Navigate to device manager: Under “Disk Drives” you should see WD XXXX drive listed.
5) If it is not listed there, your disk drive driver is not loaded and you have a hardware/connection issue.
6) Try on a different PC.
7) If your drive is listed on Device manager and still cannot see in the Windows explorer/My Computer means, your driver is either not portioned or drive letter is not assigned.
8) If this is the case, right click on My Computer icon and select “Manage”. Please note that you need to have Admin privileges at this PC. (On some Windows PC’s you cannot install USB devices without Admin privileges.)
9) If you are able to open “Computer Management” console, look under “Storage -> Disk Management”. Double click Disk Management and wait for awhile.
10) Now you should able to see Disk Drives installed in your system on right side of the window.
11) Look for Drive name e.g. WD… My Passport or similar… named or disk drive with capacity closer to your USB drive size. You’ll not see nominal drive size here. For e.g. 300 GB listed as 270 GB or similar.
12) If you see a drive without drive letter/drive name, you can assign a drive letter by right clicking blank space of the drive and choosing “change drive letter and path”. Assign a drive letter available from the list. e.g. “D” onwards.
13) If you cannot assign a drive letter means the drive is not partitioned. Right click the correct drive and create a partition of your liking, format with NTFS and assign a drive letter.
14) Now you should able to see your WD Passport on your windows explorer.
15) Again please note that, by creating partitions and formatting disk drive will delete what ever the software installed in this drive. So double check each step… and be careful not to format a wrong drive.