Hello,
Thanks for reaching out! I'm Microsoft user like you.
Please check if the external Hard Drive is working in any other Different PC
Please try to boot your PC into safe mode then connect this External drive using different USB cable and back side of the Computer port.
Right Click on Start -> Disk Management -> Please check if the USB Disk is showing and Drive letter is assigned .
In case of additional questions, reach out back to me, and I will be happy to help and try our best to resolve your issue.
Best Regards,
Prakash