Hi Iliketoworkout,welcome to 7F!
A standard install of Windows 7 x64 should have both an x86, and x64 Program Folder.
Commonly seen as:
Win 7 is designed to run both bit systems, with x64 going to the Folder marked Programs, and the x86 to the Folder marked x86.
I am not sure what your tech was trying to accomplish, but I would return to him, ask him what he did, and to return it to its previous state.
In some cases of repair a tech may have to use a test Operating System.
S/he may have just forgotten to to revert back to a standard OS.