Hello, sorry to hear you’re having problems. I assume there is some incompatibility with / between some of the numeric and scientific Python packages you have installed.
Thanks Richard for speedy reply. I tried what you said. It appears it’s time to switch to Linux. I will keep trying and providing feedback. Great thanks.
A quick feedback. On the window computer, I followed the official installation instructions and created mne environment. It still works on the ancient os!!! But, I still switch to Linux for good. Thanks for your help.