Copying my steps here as the link was to the v3 course and is a locked forum.
This is the steps I’m using for my Conda environment. Windows 10.
conda create -n fastai-3.7 python=3.7
conda activate fastai-3.7
conda install pytorch torchvision -c pytorch
conda install -c fastai fastai
conda install nb_conda_kernels
python -m ipykernel install --user --name fastai-3.7 --display-name “Python (fastai-3.7)”
conda install ipywidgets
This works on my 1080ti - but I have seen the ‘too old’ message on other machines. GTX 480 and possibly Quadra mobile for example.