The problem is that the Joulescope UI no longer supports Windows 7 x64. We, unfortunately, had to drop Windows 7 support with the last two releases (0.9.7 and 0.9.3). As you know, Microsoft dropped Windows 7 in Jan 2020 (more than a year ago), and most of our dependencies are dropping Windows 7 support.
However, if you really need to run on a Windows 7 x64 machine, for now, you still have two choices. You can either:
Install Joulescope UI 0.9.2, which still runs on Win 7.
Run from the command line.
a. Install Python 3.8.9. Be sure to check add to path. Note python 3.9 will not work.
b. Open a command prompt
c. Type: pip3 install -U joulescope_ui
d. Then to run the Joulescope UI, type: joulescope
Depending upon which software and service packs are installed on your Win 7 machine, you may also need the install the INF files. See here.