Were you using Filevault on this 2007 laptop? If so, then the user folder is encrypted and hidden (it is actually a .sparsebundle file). With a Finder window open press Command + Shift + . (the third key in the combination is a "dot" or "period" key).
https://ianlunn.co.uk/articles/quickly-showhide-hidden-files-mac-os-x-mavericks
I've seen the encrypted user folder stored in a few locations. For example on my Mac where my username is "hwtech", I might find the hidden encrypted user folder .sparsebundle file in the following locations:
/Users/hwtech/.hwtech.sparsebundle
/Users/.hwtech.sparsebundle
/Users/.hwtech/.hwtech.sparsebundle
Note: The leading "dot" in the file or folder name is what causes the item to be hidden from view within the Finder.
Just double-click on the .sparsebundle to open it. You will be prompted for the password for that user account used on the old 2007 laptop in order to unlock the contents of the .sparsebundle.