bug: Nvidia GPU's not being used on windows.

[TashaSkyUp]

Describe the bug I have a 970 and a 3090 installed on my system, but Jan decides to use CPU mode.

Steps to reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior Jan should use cuda device 0 or allow me to choose which model goes on which device

Screenshots If applicable, add screenshots to help explain your issue.

Environment details

• Operating System: windows 10
• Jan Version: 0.4.3
• Processor: amd 3900x
• RAM: 96gb
• 970 4gb, 3090 24gb

Additional context Add any other context or information that could be helpful in diagnosing the problem.