Help on reestablishing file history

In order for the responders to better assist, please post your computer model and Operating system.  Thanks.

My computer is a Inspiron All in One 2330.  The operating system is Windows 10

Changing The Drive Letter in Window 10:

Select Disk Management from Win + x Power Menu .

Right click on the hard drive and select Change Drive Letter and Paths.. from the context menu.

Click on the Change button.

Select a new drive letter and press Ok to continue.

Select Yes button again to confirm.

Thanks for trying to help me.  I tried your steps before I wrote in to the community.  It didn't work, so I added my old E external drive and the new F external drive and tried the procedure again, adding file history to the new F drive.  OOPs. that didn't work and now my PC won't recognize either of my external hard drives even when I try to add the device.  This is so challenging for me.  I cannot figure out the problem.  I did see File history got added to the F drive which is now labeled E but I cannot view any of the files.  So I am in deep trouble here.

Perhaps the Operating System has become corrupted.  Have you tried reinstalling the OS?

Thank you so much for trying to help me.  I think one of my USB ports has gone bad because I was able to try you original advice and then switch the port for the external drive and now it works.  Thank you so much.