I have a problem while I load my python pyqt5 gui on a windows vista computer using windows powershell.
I get the following error:-
qt.qpa.plugin: Could not load the Qt platform plugin "windows" in "
This application failed to start because no Qt platform plugin coul
x this problem.
Available platform plugins are: minimal, offscreen, webgl, windows.
It worked perfectly on a windows 10 computer. There had been errors where it was not been able to find the plugin. I have solved that. But now, even though it is able to find the plugin, it doesn't load. 
Can you help me out?
I had the same error using the conda base environment. I tried many attempts from different discussions about this, but in the end it worked with creating a (new) conda-env and installing dependencies such as matplotlib (which again depends on pyqt which is then also installed by conda)
Qt platform plugin not loading even though it is found