No CUD GPUs are available

[En-J-A]

I want to train a gpt2 model and I have a GeForce RTX 2060 GPU , my os is windows

torch._C._cuda_init()
RuntimeError: No CUDA GPUs are available

I installed cuda from the NVIDIA directory: https://developer.nvidia.com/cuda-downloads and use

conda install pytorch torchvision torchaudio cudatoolkit=10.2 -c pytorch

I am really confused and I want to use my laptop to coding and every time it used CPU instead of GPU.
I tried many solution to activate the GPU but I still have the same problem. I need the right steps to fix it, please.

[En-J-A]

I solved it through https://www.youtube.com/watch?v=vBfM5l9VK5c&t=342s.
Now, you can close this issue.
Thanks.