I had a "DELL" computer running "windows 7". I used a "passport" external hard drive to make a copy of this computer. I then unplugged the "passport" and put it away. That computer died. I, now, have an "HP" running "windows 10". When I plug in the "passport", it asks me if I want to format it. I know this erases it. I want to download what is on the "passport" onto this computer. I know I'm doing SOMETHING wrong, but don't know what. I am far from computer literate. I know how to do a few things, but I don't SPEAK computer and if anyone TRIES to help me. Talk to me like your talking to a dummy, because you are!Hi Stan
Your WD passport drive should not need any additional software other than windows to gain access to the information on the drive.

Are you using the cable which came with the drive not a extra long cable and they work most reliably if you connect them to a blue usb port.

I would check in windows Device manager that there is no problems with the USB ports exclamation marks here is how to access device manager
https://support.microsoft.com/en-hk/help/4026149/windows-open-device-manager

If all that checks out you may have put a security password on the drive to check this you will need the software for your passport drive WD Drive Utilities and WD Security this software is available from here https://support-en.wd.com/app/products/product-detail/p/250#WD_downloads

If you used the WD backup program you will need the software from that site called WD Backup to access the backup.
WD also use Acronis for complete drive backups which is also available on the site above.

PLEASE DON"T FORMAT THE DRIVE yes it will loose your DATA

If the above still doesn't work then you will need a program like reclaime https://www.reclaime.com/

It isn't free but it will show what files are on the drive.I am using the cable that came with the device. I've been told that I should be able to connect it and download the information. Nothing is ever that easy!!!!!!!!!!!!! What ever happened to "user friendly"