USB External Drive won't allow OS to Boot

Got a new computer with Windows 10 on internal hard drive. When I boot up with my My Book 4TB drive plugged into USB, the computer hangs up on the Dell boot screen and goes no further. Boots just fine if I disconnect the external drive.

In BIOS I removed USB from the boot sequence, so that’s not the issue. I don’t know why the computer is even looking at the USB drive when booting.

Had the same exact setup on my last PC and never had an issue.

Any ideas???

Thanks

Hello,

Please refer to the following KBA article: https://support-en.wd.com/app/answers/detail/a_id/983/