WD My Book Hard drive trouble

Hello all

I’ve recently bought a HP all in one PC running Windows 10.

Previous to this I had an iMac and before that a Windows XP machine.
Both the iMac and XP machines run my WD Passport external hard drive but it appears my new HP machine will not.
I think I’ve installed the drivers for the external drive and installed WD diagnostic tests but I still can’t get access to the drive and all my files !!!
Also I think my files are no longer there possibly? Even though I put them all there last week as I cleared everything off my iMac before selling it to buy this HP machine I currently have

Thanks for the help in advance
I haveattached an image for you to see



Make sure to update the USB drivers for the USB port on the new computer.